Home / 2,220.58-3,063.98-1,225.83

Finding the Fourth Proportional to 2,220.58, 3,063.98 and 1,225.83

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Solution

The fourth proportional to 2,220.58, 3,063.98 and 1,225.83 is: 1,691.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.58 : 3,063.98 = 1,225.83 : x
  2. Step 2: Convert to fraction form
    2,220.58/3,063.98 = 1,225.83/x
  3. Step 3: Cross multiply
    2,220.58x = 3,063.98 × 1,225.83
  4. Step 4: Simplify right side
    2,220.58x = 3,755,918.60
  5. Step 5: Solve for x
    x = 3,755,918.60/2,220.58
  6. Step 6: Final answer
    x = 1,691.41

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Half scale
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Double scale
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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.