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Finding the Fourth Proportional to 2,915.80, 4,025.10 and 1,737.28

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Solution

The fourth proportional to 2,915.80, 4,025.10 and 1,737.28 is: 2,398.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.80 : 4,025.10 = 1,737.28 : x
  2. Step 2: Convert to fraction form
    2,915.80/4,025.10 = 1,737.28/x
  3. Step 3: Cross multiply
    2,915.80x = 4,025.10 × 1,737.28
  4. Step 4: Simplify right side
    2,915.80x = 6,992,725.73
  5. Step 5: Solve for x
    x = 6,992,725.73/2,915.80
  6. Step 6: Final answer
    x = 2,398.22

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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.