Home / 5,387.39-8,081.09-1,689.92

Finding the Fourth Proportional to 5,387.39, 8,081.09 and 1,689.92

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Solution

The fourth proportional to 5,387.39, 8,081.09 and 1,689.92 is: 2,534.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.39 : 8,081.09 = 1,689.92 : x
  2. Step 2: Convert to fraction form
    5,387.39/8,081.09 = 1,689.92/x
  3. Step 3: Cross multiply
    5,387.39x = 8,081.09 × 1,689.92
  4. Step 4: Simplify right side
    5,387.39x = 13,656,387.16
  5. Step 5: Solve for x
    x = 13,656,387.16/5,387.39
  6. Step 6: Final answer
    x = 2,534.88

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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.