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Finding the Fourth Proportional to 1,772.70, 2,660.67 and 951.90

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Solution

The fourth proportional to 1,772.70, 2,660.67 and 951.90 is: 1,428.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.70 : 2,660.67 = 951.90 : x
  2. Step 2: Convert to fraction form
    1,772.70/2,660.67 = 951.90/x
  3. Step 3: Cross multiply
    1,772.70x = 2,660.67 × 951.90
  4. Step 4: Simplify right side
    1,772.70x = 2,532,691.77
  5. Step 5: Solve for x
    x = 2,532,691.77/1,772.70
  6. Step 6: Final answer
    x = 1,428.72

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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.