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Finding the Fourth Proportional to 4,042.74, 5,578.74 and 2,274.24

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Solution

The fourth proportional to 4,042.74, 5,578.74 and 2,274.24 is: 3,138.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,042.74 : 5,578.74 = 2,274.24 : x
  2. Step 2: Convert to fraction form
    4,042.74/5,578.74 = 2,274.24/x
  3. Step 3: Cross multiply
    4,042.74x = 5,578.74 × 2,274.24
  4. Step 4: Simplify right side
    4,042.74x = 12,687,393.66
  5. Step 5: Solve for x
    x = 12,687,393.66/4,042.74
  6. Step 6: Final answer
    x = 3,138.32

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Find fourth proportional to 2,021.37, 2,789.37 and 1,137.12
Half scale
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Double scale
Find fourth proportional to 4,043.74, 5,580.12 and 2,275.24
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.