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Finding the Fourth Proportional to 8,517.90, 11,754.93 and 4,689.65

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Solution

The fourth proportional to 8,517.90, 11,754.93 and 4,689.65 is: 6,471.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.90 : 11,754.93 = 4,689.65 : x
  2. Step 2: Convert to fraction form
    8,517.90/11,754.93 = 4,689.65/x
  3. Step 3: Cross multiply
    8,517.90x = 11,754.93 × 4,689.65
  4. Step 4: Simplify right side
    8,517.90x = 55,126,507.47
  5. Step 5: Solve for x
    x = 55,126,507.47/8,517.90
  6. Step 6: Final answer
    x = 6,471.84

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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.