Home / 2,765.68-4,142.76-2,147.20

Finding the Fourth Proportional to 2,765.68, 4,142.76 and 2,147.20

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Solution

The fourth proportional to 2,765.68, 4,142.76 and 2,147.20 is: 3,216.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.68 : 4,142.76 = 2,147.20 : x
  2. Step 2: Convert to fraction form
    2,765.68/4,142.76 = 2,147.20/x
  3. Step 3: Cross multiply
    2,765.68x = 4,142.76 × 2,147.20
  4. Step 4: Simplify right side
    2,765.68x = 8,895,334.27
  5. Step 5: Solve for x
    x = 8,895,334.27/2,765.68
  6. Step 6: Final answer
    x = 3,216.33

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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.