Home / 3,945.15-5,445.09-2,267.70

Finding the Fourth Proportional to 3,945.15, 5,445.09 and 2,267.70

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Solution

The fourth proportional to 3,945.15, 5,445.09 and 2,267.70 is: 3,129.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.15 : 5,445.09 = 2,267.70 : x
  2. Step 2: Convert to fraction form
    3,945.15/5,445.09 = 2,267.70/x
  3. Step 3: Cross multiply
    3,945.15x = 5,445.09 × 2,267.70
  4. Step 4: Simplify right side
    3,945.15x = 12,347,830.59
  5. Step 5: Solve for x
    x = 12,347,830.59/3,945.15
  6. Step 6: Final answer
    x = 3,129.88

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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.