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Finding the Fourth Proportional to 8,687.88, 12,955.55 and 8,608.97

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Solution

The fourth proportional to 8,687.88, 12,955.55 and 8,608.97 is: 12,837.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.88 : 12,955.55 = 8,608.97 : x
  2. Step 2: Convert to fraction form
    8,687.88/12,955.55 = 8,608.97/x
  3. Step 3: Cross multiply
    8,687.88x = 12,955.55 × 8,608.97
  4. Step 4: Simplify right side
    8,687.88x = 111,533,941.28
  5. Step 5: Solve for x
    x = 111,533,941.28/8,687.88
  6. Step 6: Final answer
    x = 12,837.88

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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.