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Finding the Fourth Proportional to 9,220.72, 12,726.36 and 8,658.04

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Solution

The fourth proportional to 9,220.72, 12,726.36 and 8,658.04 is: 11,949.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,220.72 : 12,726.36 = 8,658.04 : x
  2. Step 2: Convert to fraction form
    9,220.72/12,726.36 = 8,658.04/x
  3. Step 3: Cross multiply
    9,220.72x = 12,726.36 × 8,658.04
  4. Step 4: Simplify right side
    9,220.72x = 110,185,333.93
  5. Step 5: Solve for x
    x = 110,185,333.93/9,220.72
  6. Step 6: Final answer
    x = 11,949.75

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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.