Home / 3,868.81-5,338.66-2,275.52

Finding the Fourth Proportional to 3,868.81, 5,338.66 and 2,275.52

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Solution

The fourth proportional to 3,868.81, 5,338.66 and 2,275.52 is: 3,140.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.81 : 5,338.66 = 2,275.52 : x
  2. Step 2: Convert to fraction form
    3,868.81/5,338.66 = 2,275.52/x
  3. Step 3: Cross multiply
    3,868.81x = 5,338.66 × 2,275.52
  4. Step 4: Simplify right side
    3,868.81x = 12,148,227.60
  5. Step 5: Solve for x
    x = 12,148,227.60/3,868.81
  6. Step 6: Final answer
    x = 3,140.04

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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.