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Finding the Fourth Proportional to 7,992.60, 11,988.90 and 7,301.40

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Solution

The fourth proportional to 7,992.60, 11,988.90 and 7,301.40 is: 10,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.60 : 11,988.90 = 7,301.40 : x
  2. Step 2: Convert to fraction form
    7,992.60/11,988.90 = 7,301.40/x
  3. Step 3: Cross multiply
    7,992.60x = 11,988.90 × 7,301.40
  4. Step 4: Simplify right side
    7,992.60x = 87,535,754.46
  5. Step 5: Solve for x
    x = 87,535,754.46/7,992.60
  6. Step 6: Final answer
    x = 10,952.10

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Similar ratio
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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.