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Finding the Fourth Proportional to 2,915.32, 4,373.16 and 724.10

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Solution

The fourth proportional to 2,915.32, 4,373.16 and 724.10 is: 1,086.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.32 : 4,373.16 = 724.10 : x
  2. Step 2: Convert to fraction form
    2,915.32/4,373.16 = 724.10/x
  3. Step 3: Cross multiply
    2,915.32x = 4,373.16 × 724.10
  4. Step 4: Simplify right side
    2,915.32x = 3,166,605.16
  5. Step 5: Solve for x
    x = 3,166,605.16/2,915.32
  6. Step 6: Final answer
    x = 1,086.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.