Home / 5,426.42-8,139.92-1,531.13

Finding the Fourth Proportional to 5,426.42, 8,139.92 and 1,531.13

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Solution

The fourth proportional to 5,426.42, 8,139.92 and 1,531.13 is: 2,296.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.42 : 8,139.92 = 1,531.13 : x
  2. Step 2: Convert to fraction form
    5,426.42/8,139.92 = 1,531.13/x
  3. Step 3: Cross multiply
    5,426.42x = 8,139.92 × 1,531.13
  4. Step 4: Simplify right side
    5,426.42x = 12,463,268.05
  5. Step 5: Solve for x
    x = 12,463,268.05/5,426.42
  6. Step 6: Final answer
    x = 2,296.78

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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.