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Finding the Fourth Proportional to 7,808.47, 11,713.39 and 3,591.68

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Solution

The fourth proportional to 7,808.47, 11,713.39 and 3,591.68 is: 5,387.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.47 : 11,713.39 = 3,591.68 : x
  2. Step 2: Convert to fraction form
    7,808.47/11,713.39 = 3,591.68/x
  3. Step 3: Cross multiply
    7,808.47x = 11,713.39 × 3,591.68
  4. Step 4: Simplify right side
    7,808.47x = 42,070,681.05
  5. Step 5: Solve for x
    x = 42,070,681.05/7,808.47
  6. Step 6: Final answer
    x = 5,387.83

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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.