Home / 3,868.69-5,337.33-2,862.80

Finding the Fourth Proportional to 3,868.69, 5,337.33 and 2,862.80

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Solution

The fourth proportional to 3,868.69, 5,337.33 and 2,862.80 is: 3,949.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.69 : 5,337.33 = 2,862.80 : x
  2. Step 2: Convert to fraction form
    3,868.69/5,337.33 = 2,862.80/x
  3. Step 3: Cross multiply
    3,868.69x = 5,337.33 × 2,862.80
  4. Step 4: Simplify right side
    3,868.69x = 15,279,708.32
  5. Step 5: Solve for x
    x = 15,279,708.32/3,868.69
  6. Step 6: Final answer
    x = 3,949.58

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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.