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Finding the Fourth Proportional to 2,614.88, 3,607.92 and 1,915.04

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Solution

The fourth proportional to 2,614.88, 3,607.92 and 1,915.04 is: 2,642.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,614.88 : 3,607.92 = 1,915.04 : x
  2. Step 2: Convert to fraction form
    2,614.88/3,607.92 = 1,915.04/x
  3. Step 3: Cross multiply
    2,614.88x = 3,607.92 × 1,915.04
  4. Step 4: Simplify right side
    2,614.88x = 6,909,311.12
  5. Step 5: Solve for x
    x = 6,909,311.12/2,614.88
  6. Step 6: Final answer
    x = 2,642.31

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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.