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Finding the Fourth Proportional to 9,179.17, 12,667.17 and 4,987.42

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Solution

The fourth proportional to 9,179.17, 12,667.17 and 4,987.42 is: 6,882.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.17 : 12,667.17 = 4,987.42 : x
  2. Step 2: Convert to fraction form
    9,179.17/12,667.17 = 4,987.42/x
  3. Step 3: Cross multiply
    9,179.17x = 12,667.17 × 4,987.42
  4. Step 4: Simplify right side
    9,179.17x = 63,176,497.00
  5. Step 5: Solve for x
    x = 63,176,497.00/9,179.17
  6. Step 6: Final answer
    x = 6,882.59

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Half scale
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Double scale
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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.