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Finding the Fourth Proportional to 1,718.57, 2,371.61 and 932.61

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Solution

The fourth proportional to 1,718.57, 2,371.61 and 932.61 is: 1,286.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.57 : 2,371.61 = 932.61 : x
  2. Step 2: Convert to fraction form
    1,718.57/2,371.61 = 932.61/x
  3. Step 3: Cross multiply
    1,718.57x = 2,371.61 × 932.61
  4. Step 4: Simplify right side
    1,718.57x = 2,211,787.20
  5. Step 5: Solve for x
    x = 2,211,787.20/1,718.57
  6. Step 6: Final answer
    x = 1,286.99

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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.