Home / 4,087.20-5,644.56-3,146.40

Finding the Fourth Proportional to 4,087.20, 5,644.56 and 3,146.40

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Solution

The fourth proportional to 4,087.20, 5,644.56 and 3,146.40 is: 4,345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.20 : 5,644.56 = 3,146.40 : x
  2. Step 2: Convert to fraction form
    4,087.20/5,644.56 = 3,146.40/x
  3. Step 3: Cross multiply
    4,087.20x = 5,644.56 × 3,146.40
  4. Step 4: Simplify right side
    4,087.20x = 17,760,043.58
  5. Step 5: Solve for x
    x = 17,760,043.58/4,087.20
  6. Step 6: Final answer
    x = 4,345.28

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Half scale
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Double scale
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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.