Home / 5,385.46-8,079.11-1,686.97

Finding the Fourth Proportional to 5,385.46, 8,079.11 and 1,686.97

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Solution

The fourth proportional to 5,385.46, 8,079.11 and 1,686.97 is: 2,530.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.46 : 8,079.11 = 1,686.97 : x
  2. Step 2: Convert to fraction form
    5,385.46/8,079.11 = 1,686.97/x
  3. Step 3: Cross multiply
    5,385.46x = 8,079.11 × 1,686.97
  4. Step 4: Simplify right side
    5,385.46x = 13,629,216.20
  5. Step 5: Solve for x
    x = 13,629,216.20/5,385.46
  6. Step 6: Final answer
    x = 2,530.74

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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.