Home / 4,220.88-6,331.31-1,100.87

Finding the Fourth Proportional to 4,220.88, 6,331.31 and 1,100.87

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Solution

The fourth proportional to 4,220.88, 6,331.31 and 1,100.87 is: 1,651.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.88 : 6,331.31 = 1,100.87 : x
  2. Step 2: Convert to fraction form
    4,220.88/6,331.31 = 1,100.87/x
  3. Step 3: Cross multiply
    4,220.88x = 6,331.31 × 1,100.87
  4. Step 4: Simplify right side
    4,220.88x = 6,969,981.76
  5. Step 5: Solve for x
    x = 6,969,981.76/4,220.88
  6. Step 6: Final answer
    x = 1,651.31

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Double scale
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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.