Home / 2,220.40-3,332.22-760.78

Finding the Fourth Proportional to 2,220.40, 3,332.22 and 760.78

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Solution

The fourth proportional to 2,220.40, 3,332.22 and 760.78 is: 1,141.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.40 : 3,332.22 = 760.78 : x
  2. Step 2: Convert to fraction form
    2,220.40/3,332.22 = 760.78/x
  3. Step 3: Cross multiply
    2,220.40x = 3,332.22 × 760.78
  4. Step 4: Simplify right side
    2,220.40x = 2,535,086.33
  5. Step 5: Solve for x
    x = 2,535,086.33/2,220.40
  6. Step 6: Final answer
    x = 1,141.73

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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.