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Finding the Fourth Proportional to 1,737.49, 2,397.36 and 991.17

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Solution

The fourth proportional to 1,737.49, 2,397.36 and 991.17 is: 1,367.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,737.49 : 2,397.36 = 991.17 : x
  2. Step 2: Convert to fraction form
    1,737.49/2,397.36 = 991.17/x
  3. Step 3: Cross multiply
    1,737.49x = 2,397.36 × 991.17
  4. Step 4: Simplify right side
    1,737.49x = 2,376,179.32
  5. Step 5: Solve for x
    x = 2,376,179.32/1,737.49
  6. Step 6: Final answer
    x = 1,367.59

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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.