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Finding the Fourth Proportional to 8,489.93, 12,708.23 and 5,359.10

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Solution

The fourth proportional to 8,489.93, 12,708.23 and 5,359.10 is: 8,021.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.93 : 12,708.23 = 5,359.10 : x
  2. Step 2: Convert to fraction form
    8,489.93/12,708.23 = 5,359.10/x
  3. Step 3: Cross multiply
    8,489.93x = 12,708.23 × 5,359.10
  4. Step 4: Simplify right side
    8,489.93x = 68,104,675.39
  5. Step 5: Solve for x
    x = 68,104,675.39/8,489.93
  6. Step 6: Final answer
    x = 8,021.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.