Home / 2,220.90-3,331.35-922.47

Finding the Fourth Proportional to 2,220.90, 3,331.35 and 922.47

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Solution

The fourth proportional to 2,220.90, 3,331.35 and 922.47 is: 1,383.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.90 : 3,331.35 = 922.47 : x
  2. Step 2: Convert to fraction form
    2,220.90/3,331.35 = 922.47/x
  3. Step 3: Cross multiply
    2,220.90x = 3,331.35 × 922.47
  4. Step 4: Simplify right side
    2,220.90x = 3,073,070.43
  5. Step 5: Solve for x
    x = 3,073,070.43/2,220.90
  6. Step 6: Final answer
    x = 1,383.71

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Similar ratio
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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.