Home / 3,445.60-5,161.20-2,578.72

Finding the Fourth Proportional to 3,445.60, 5,161.20 and 2,578.72

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Solution

The fourth proportional to 3,445.60, 5,161.20 and 2,578.72 is: 3,862.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.60 : 5,161.20 = 2,578.72 : x
  2. Step 2: Convert to fraction form
    3,445.60/5,161.20 = 2,578.72/x
  3. Step 3: Cross multiply
    3,445.60x = 5,161.20 × 2,578.72
  4. Step 4: Simplify right side
    3,445.60x = 13,309,289.66
  5. Step 5: Solve for x
    x = 13,309,289.66/3,445.60
  6. Step 6: Final answer
    x = 3,862.69

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Double scale
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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.