Home / 9,321.30-12,857.54-6,134.76

Finding the Fourth Proportional to 9,321.30, 12,857.54 and 6,134.76

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Solution

The fourth proportional to 9,321.30, 12,857.54 and 6,134.76 is: 8,462.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.30 : 12,857.54 = 6,134.76 : x
  2. Step 2: Convert to fraction form
    9,321.30/12,857.54 = 6,134.76/x
  3. Step 3: Cross multiply
    9,321.30x = 12,857.54 × 6,134.76
  4. Step 4: Simplify right side
    9,321.30x = 78,877,891.42
  5. Step 5: Solve for x
    x = 78,877,891.42/9,321.30
  6. Step 6: Final answer
    x = 8,462.11

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Half scale
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Double scale
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Similar ratio
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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.