Home / 2,220.41-3,063.84-1,225.73

Finding the Fourth Proportional to 2,220.41, 3,063.84 and 1,225.73

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Solution

The fourth proportional to 2,220.41, 3,063.84 and 1,225.73 is: 1,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.41 : 3,063.84 = 1,225.73 : x
  2. Step 2: Convert to fraction form
    2,220.41/3,063.84 = 1,225.73/x
  3. Step 3: Cross multiply
    2,220.41x = 3,063.84 × 1,225.73
  4. Step 4: Simplify right side
    2,220.41x = 3,755,425.28
  5. Step 5: Solve for x
    x = 3,755,425.28/2,220.41
  6. Step 6: Final answer
    x = 1,691.32

Related Problems

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Half scale
Find fourth proportional to 4,440.81, 6,127.68 and 2,451.45
Double scale
Find fourth proportional to 2,221.41, 3,065.22 and 1,226.73
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.