Home / 2,881.20-4,319.16-932.40

Finding the Fourth Proportional to 2,881.20, 4,319.16 and 932.40

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Solution

The fourth proportional to 2,881.20, 4,319.16 and 932.40 is: 1,397.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.20 : 4,319.16 = 932.40 : x
  2. Step 2: Convert to fraction form
    2,881.20/4,319.16 = 932.40/x
  3. Step 3: Cross multiply
    2,881.20x = 4,319.16 × 932.40
  4. Step 4: Simplify right side
    2,881.20x = 4,027,184.78
  5. Step 5: Solve for x
    x = 4,027,184.78/2,881.20
  6. Step 6: Final answer
    x = 1,397.75

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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.