Home / 3,868.11-5,337.88-2,274.78

Finding the Fourth Proportional to 3,868.11, 5,337.88 and 2,274.78

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Solution

The fourth proportional to 3,868.11, 5,337.88 and 2,274.78 is: 3,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.11 : 5,337.88 = 2,274.78 : x
  2. Step 2: Convert to fraction form
    3,868.11/5,337.88 = 2,274.78/x
  3. Step 3: Cross multiply
    3,868.11x = 5,337.88 × 2,274.78
  4. Step 4: Simplify right side
    3,868.11x = 12,142,502.67
  5. Step 5: Solve for x
    x = 12,142,502.67/3,868.11
  6. Step 6: Final answer
    x = 3,139.13

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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.