Home / 2,167.60-3,251.52-918.40

Finding the Fourth Proportional to 2,167.60, 3,251.52 and 918.40

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Solution

The fourth proportional to 2,167.60, 3,251.52 and 918.40 is: 1,377.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.60 : 3,251.52 = 918.40 : x
  2. Step 2: Convert to fraction form
    2,167.60/3,251.52 = 918.40/x
  3. Step 3: Cross multiply
    2,167.60x = 3,251.52 × 918.40
  4. Step 4: Simplify right side
    2,167.60x = 2,986,195.97
  5. Step 5: Solve for x
    x = 2,986,195.97/2,167.60
  6. Step 6: Final answer
    x = 1,377.65

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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.