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Finding the Fourth Proportional to 7,766.71, 11,650.20 and 2,572.72

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Solution

The fourth proportional to 7,766.71, 11,650.20 and 2,572.72 is: 3,859.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,766.71 : 11,650.20 = 2,572.72 : x
  2. Step 2: Convert to fraction form
    7,766.71/11,650.20 = 2,572.72/x
  3. Step 3: Cross multiply
    7,766.71x = 11,650.20 × 2,572.72
  4. Step 4: Simplify right side
    7,766.71x = 29,972,702.54
  5. Step 5: Solve for x
    x = 29,972,702.54/7,766.71
  6. Step 6: Final answer
    x = 3,859.12

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1.5x scale

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.