Home / 3,612.80-5,414.40-2,585.60

Finding the Fourth Proportional to 3,612.80, 5,414.40 and 2,585.60

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Solution

The fourth proportional to 3,612.80, 5,414.40 and 2,585.60 is: 3,874.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.80 : 5,414.40 = 2,585.60 : x
  2. Step 2: Convert to fraction form
    3,612.80/5,414.40 = 2,585.60/x
  3. Step 3: Cross multiply
    3,612.80x = 5,414.40 × 2,585.60
  4. Step 4: Simplify right side
    3,612.80x = 13,999,472.64
  5. Step 5: Solve for x
    x = 13,999,472.64/3,612.80
  6. Step 6: Final answer
    x = 3,874.96

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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.