Home / 7,407.90-11,111.85-2,213.78

Finding the Fourth Proportional to 7,407.90, 11,111.85 and 2,213.78

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Solution

The fourth proportional to 7,407.90, 11,111.85 and 2,213.78 is: 3,320.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,407.90 : 11,111.85 = 2,213.78 : x
  2. Step 2: Convert to fraction form
    7,407.90/11,111.85 = 2,213.78/x
  3. Step 3: Cross multiply
    7,407.90x = 11,111.85 × 2,213.78
  4. Step 4: Simplify right side
    7,407.90x = 24,599,135.73
  5. Step 5: Solve for x
    x = 24,599,135.73/7,407.90
  6. Step 6: Final answer
    x = 3,320.66

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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.