Home / 5,387.30-8,080.96-1,689.82

Finding the Fourth Proportional to 5,387.30, 8,080.96 and 1,689.82

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Solution

The fourth proportional to 5,387.30, 8,080.96 and 1,689.82 is: 2,534.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.30 : 8,080.96 = 1,689.82 : x
  2. Step 2: Convert to fraction form
    5,387.30/8,080.96 = 1,689.82/x
  3. Step 3: Cross multiply
    5,387.30x = 8,080.96 × 1,689.82
  4. Step 4: Simplify right side
    5,387.30x = 13,655,367.83
  5. Step 5: Solve for x
    x = 13,655,367.83/5,387.30
  6. Step 6: Final answer
    x = 2,534.73

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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.