Home / 2,880.20-4,320.90-932.55

Finding the Fourth Proportional to 2,880.20, 4,320.90 and 932.55

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Solution

The fourth proportional to 2,880.20, 4,320.90 and 932.55 is: 1,399.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.20 : 4,320.90 = 932.55 : x
  2. Step 2: Convert to fraction form
    2,880.20/4,320.90 = 932.55/x
  3. Step 3: Cross multiply
    2,880.20x = 4,320.90 × 932.55
  4. Step 4: Simplify right side
    2,880.20x = 4,029,455.30
  5. Step 5: Solve for x
    x = 4,029,455.30/2,880.20
  6. Step 6: Final answer
    x = 1,399.02

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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.