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Finding the Fourth Proportional to 7,957.19, 11,932.71 and 2,690.80

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Solution

The fourth proportional to 7,957.19, 11,932.71 and 2,690.80 is: 4,035.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.19 : 11,932.71 = 2,690.80 : x
  2. Step 2: Convert to fraction form
    7,957.19/11,932.71 = 2,690.80/x
  3. Step 3: Cross multiply
    7,957.19x = 11,932.71 × 2,690.80
  4. Step 4: Simplify right side
    7,957.19x = 32,108,496.15
  5. Step 5: Solve for x
    x = 32,108,496.15/7,957.19
  6. Step 6: Final answer
    x = 4,035.15

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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.