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Finding the Fourth Proportional to 7,986.32, 11,909.12 and 7,432.28

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Solution

The fourth proportional to 7,986.32, 11,909.12 and 7,432.28 is: 11,082.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.32 : 11,909.12 = 7,432.28 : x
  2. Step 2: Convert to fraction form
    7,986.32/11,909.12 = 7,432.28/x
  3. Step 3: Cross multiply
    7,986.32x = 11,909.12 × 7,432.28
  4. Step 4: Simplify right side
    7,986.32x = 88,511,914.39
  5. Step 5: Solve for x
    x = 88,511,914.39/7,986.32
  6. Step 6: Final answer
    x = 11,082.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.