Home / 2,720.28-4,074.23-2,658.78

Finding the Fourth Proportional to 2,720.28, 4,074.23 and 2,658.78

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Solution

The fourth proportional to 2,720.28, 4,074.23 and 2,658.78 is: 3,982.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.28 : 4,074.23 = 2,658.78 : x
  2. Step 2: Convert to fraction form
    2,720.28/4,074.23 = 2,658.78/x
  3. Step 3: Cross multiply
    2,720.28x = 4,074.23 × 2,658.78
  4. Step 4: Simplify right side
    2,720.28x = 10,832,467.95
  5. Step 5: Solve for x
    x = 10,832,467.95/2,720.28
  6. Step 6: Final answer
    x = 3,982.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.