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Finding the Fourth Proportional to 9,179.72, 12,667.97 and 4,987.97

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Solution

The fourth proportional to 9,179.72, 12,667.97 and 4,987.97 is: 6,883.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.72 : 12,667.97 = 4,987.97 : x
  2. Step 2: Convert to fraction form
    9,179.72/12,667.97 = 4,987.97/x
  3. Step 3: Cross multiply
    9,179.72x = 12,667.97 × 4,987.97
  4. Step 4: Simplify right side
    9,179.72x = 63,187,461.05
  5. Step 5: Solve for x
    x = 63,187,461.05/9,179.72
  6. Step 6: Final answer
    x = 6,883.37

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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.