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Finding the Fourth Proportional to 1,695.57, 2,544.30 and 915.56

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Solution

The fourth proportional to 1,695.57, 2,544.30 and 915.56 is: 1,373.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.57 : 2,544.30 = 915.56 : x
  2. Step 2: Convert to fraction form
    1,695.57/2,544.30 = 915.56/x
  3. Step 3: Cross multiply
    1,695.57x = 2,544.30 × 915.56
  4. Step 4: Simplify right side
    1,695.57x = 2,329,456.38
  5. Step 5: Solve for x
    x = 2,329,456.38/1,695.57
  6. Step 6: Final answer
    x = 1,373.85

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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.