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Finding the Fourth Proportional to 9,885.62, 13,631.82 and 6,345.92

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Solution

The fourth proportional to 9,885.62, 13,631.82 and 6,345.92 is: 8,750.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.62 : 13,631.82 = 6,345.92 : x
  2. Step 2: Convert to fraction form
    9,885.62/13,631.82 = 6,345.92/x
  3. Step 3: Cross multiply
    9,885.62x = 13,631.82 × 6,345.92
  4. Step 4: Simplify right side
    9,885.62x = 86,506,439.17
  5. Step 5: Solve for x
    x = 86,506,439.17/9,885.62
  6. Step 6: Final answer
    x = 8,750.73

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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.