Home / 3,868.19-5,338.10-2,275.90

Finding the Fourth Proportional to 3,868.19, 5,338.10 and 2,275.90

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Solution

The fourth proportional to 3,868.19, 5,338.10 and 2,275.90 is: 3,140.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.19 : 5,338.10 = 2,275.90 : x
  2. Step 2: Convert to fraction form
    3,868.19/5,338.10 = 2,275.90/x
  3. Step 3: Cross multiply
    3,868.19x = 5,338.10 × 2,275.90
  4. Step 4: Simplify right side
    3,868.19x = 12,148,974.13
  5. Step 5: Solve for x
    x = 12,148,974.13/3,868.19
  6. Step 6: Final answer
    x = 3,140.74

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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.