Home / 1,531.20-2,293.02-880.68

Finding the Fourth Proportional to 1,531.20, 2,293.02 and 880.68

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Solution

The fourth proportional to 1,531.20, 2,293.02 and 880.68 is: 1,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.20 : 2,293.02 = 880.68 : x
  2. Step 2: Convert to fraction form
    1,531.20/2,293.02 = 880.68/x
  3. Step 3: Cross multiply
    1,531.20x = 2,293.02 × 880.68
  4. Step 4: Simplify right side
    1,531.20x = 2,019,416.85
  5. Step 5: Solve for x
    x = 2,019,416.85/1,531.20
  6. Step 6: Final answer
    x = 1,318.85

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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.