Home / 2,880.12-4,320.24-932.40

Finding the Fourth Proportional to 2,880.12, 4,320.24 and 932.40

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Solution

The fourth proportional to 2,880.12, 4,320.24 and 932.40 is: 1,398.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.12 : 4,320.24 = 932.40 : x
  2. Step 2: Convert to fraction form
    2,880.12/4,320.24 = 932.40/x
  3. Step 3: Cross multiply
    2,880.12x = 4,320.24 × 932.40
  4. Step 4: Simplify right side
    2,880.12x = 4,028,191.78
  5. Step 5: Solve for x
    x = 4,028,191.78/2,880.12
  6. Step 6: Final answer
    x = 1,398.62

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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.