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Finding the Fourth Proportional to 8,540.88, 12,726.41 and 7,609.28

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Solution

The fourth proportional to 8,540.88, 12,726.41 and 7,609.28 is: 11,338.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.88 : 12,726.41 = 7,609.28 : x
  2. Step 2: Convert to fraction form
    8,540.88/12,726.41 = 7,609.28/x
  3. Step 3: Cross multiply
    8,540.88x = 12,726.41 × 7,609.28
  4. Step 4: Simplify right side
    8,540.88x = 96,838,817.08
  5. Step 5: Solve for x
    x = 96,838,817.08/8,540.88
  6. Step 6: Final answer
    x = 11,338.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.