Home / 3,945.55-5,445.99-2,766.91

Finding the Fourth Proportional to 3,945.55, 5,445.99 and 2,766.91

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Solution

The fourth proportional to 3,945.55, 5,445.99 and 2,766.91 is: 3,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.55 : 5,445.99 = 2,766.91 : x
  2. Step 2: Convert to fraction form
    3,945.55/5,445.99 = 2,766.91/x
  3. Step 3: Cross multiply
    3,945.55x = 5,445.99 × 2,766.91
  4. Step 4: Simplify right side
    3,945.55x = 15,068,564.19
  5. Step 5: Solve for x
    x = 15,068,564.19/3,945.55
  6. Step 6: Final answer
    x = 3,819.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.