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Finding the Fourth Proportional to 5,668.78, 7,822.96 and 3,150.90

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Solution

The fourth proportional to 5,668.78, 7,822.96 and 3,150.90 is: 4,348.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,668.78 : 7,822.96 = 3,150.90 : x
  2. Step 2: Convert to fraction form
    5,668.78/7,822.96 = 3,150.90/x
  3. Step 3: Cross multiply
    5,668.78x = 7,822.96 × 3,150.90
  4. Step 4: Simplify right side
    5,668.78x = 24,649,364.66
  5. Step 5: Solve for x
    x = 24,649,364.66/5,668.78
  6. Step 6: Final answer
    x = 4,348.27

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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.