Home / 3,640.80-5,456.40-2,613.60

Finding the Fourth Proportional to 3,640.80, 5,456.40 and 2,613.60

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Solution

The fourth proportional to 3,640.80, 5,456.40 and 2,613.60 is: 3,916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.80 : 5,456.40 = 2,613.60 : x
  2. Step 2: Convert to fraction form
    3,640.80/5,456.40 = 2,613.60/x
  3. Step 3: Cross multiply
    3,640.80x = 5,456.40 × 2,613.60
  4. Step 4: Simplify right side
    3,640.80x = 14,260,847.04
  5. Step 5: Solve for x
    x = 14,260,847.04/3,640.80
  6. Step 6: Final answer
    x = 3,916.95

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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.