Home / 3,860.28-5,329.20-2,974.12

Finding the Fourth Proportional to 3,860.28, 5,329.20 and 2,974.12

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Solution

The fourth proportional to 3,860.28, 5,329.20 and 2,974.12 is: 4,105.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.28 : 5,329.20 = 2,974.12 : x
  2. Step 2: Convert to fraction form
    3,860.28/5,329.20 = 2,974.12/x
  3. Step 3: Cross multiply
    3,860.28x = 5,329.20 × 2,974.12
  4. Step 4: Simplify right side
    3,860.28x = 15,849,680.30
  5. Step 5: Solve for x
    x = 15,849,680.30/3,860.28
  6. Step 6: Final answer
    x = 4,105.84

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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.