Home / 5,412.38-8,118.89-1,517.09

Finding the Fourth Proportional to 5,412.38, 8,118.89 and 1,517.09

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Solution

The fourth proportional to 5,412.38, 8,118.89 and 1,517.09 is: 2,275.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.38 : 8,118.89 = 1,517.09 : x
  2. Step 2: Convert to fraction form
    5,412.38/8,118.89 = 1,517.09/x
  3. Step 3: Cross multiply
    5,412.38x = 8,118.89 × 1,517.09
  4. Step 4: Simplify right side
    5,412.38x = 12,317,079.24
  5. Step 5: Solve for x
    x = 12,317,079.24/5,412.38
  6. Step 6: Final answer
    x = 2,275.72

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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.