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Finding the Fourth Proportional to 7,761.16, 11,644.17 and 4,990.96

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Solution

The fourth proportional to 7,761.16, 11,644.17 and 4,990.96 is: 7,488.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,761.16 : 11,644.17 = 4,990.96 : x
  2. Step 2: Convert to fraction form
    7,761.16/11,644.17 = 4,990.96/x
  3. Step 3: Cross multiply
    7,761.16x = 11,644.17 × 4,990.96
  4. Step 4: Simplify right side
    7,761.16x = 58,115,503.53
  5. Step 5: Solve for x
    x = 58,115,503.53/7,761.16
  6. Step 6: Final answer
    x = 7,488.00

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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.