Home / 3,292.80-4,929.60-2,587.20

Finding the Fourth Proportional to 3,292.80, 4,929.60 and 2,587.20

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Solution

The fourth proportional to 3,292.80, 4,929.60 and 2,587.20 is: 3,873.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,292.80 : 4,929.60 = 2,587.20 : x
  2. Step 2: Convert to fraction form
    3,292.80/4,929.60 = 2,587.20/x
  3. Step 3: Cross multiply
    3,292.80x = 4,929.60 × 2,587.20
  4. Step 4: Simplify right side
    3,292.80x = 12,753,861.12
  5. Step 5: Solve for x
    x = 12,753,861.12/3,292.80
  6. Step 6: Final answer
    x = 3,873.26

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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.