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Finding the Fourth Proportional to 8,956.32, 12,359.70 and 5,230.32

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Solution

The fourth proportional to 8,956.32, 12,359.70 and 5,230.32 is: 7,217.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,956.32 : 12,359.70 = 5,230.32 : x
  2. Step 2: Convert to fraction form
    8,956.32/12,359.70 = 5,230.32/x
  3. Step 3: Cross multiply
    8,956.32x = 12,359.70 × 5,230.32
  4. Step 4: Simplify right side
    8,956.32x = 64,645,186.10
  5. Step 5: Solve for x
    x = 64,645,186.10/8,956.32
  6. Step 6: Final answer
    x = 7,217.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.