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Finding the Fourth Proportional to 8,382.56, 12,496.74 and 7,988.88

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Solution

The fourth proportional to 8,382.56, 12,496.74 and 7,988.88 is: 11,909.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,382.56 : 12,496.74 = 7,988.88 : x
  2. Step 2: Convert to fraction form
    8,382.56/12,496.74 = 7,988.88/x
  3. Step 3: Cross multiply
    8,382.56x = 12,496.74 × 7,988.88
  4. Step 4: Simplify right side
    8,382.56x = 99,834,956.25
  5. Step 5: Solve for x
    x = 99,834,956.25/8,382.56
  6. Step 6: Final answer
    x = 11,909.84

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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.