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Finding the Fourth Proportional to 8,686.88, 12,954.06 and 8,607.97

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Solution

The fourth proportional to 8,686.88, 12,954.06 and 8,607.97 is: 12,836.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.88 : 12,954.06 = 8,607.97 : x
  2. Step 2: Convert to fraction form
    8,686.88/12,954.06 = 8,607.97/x
  3. Step 3: Cross multiply
    8,686.88x = 12,954.06 × 8,607.97
  4. Step 4: Simplify right side
    8,686.88x = 111,508,176.05
  5. Step 5: Solve for x
    x = 111,508,176.05/8,686.88
  6. Step 6: Final answer
    x = 12,836.39

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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.