Home / 2,220.46-3,064.32-1,225.72

Finding the Fourth Proportional to 2,220.46, 3,064.32 and 1,225.72

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Solution

The fourth proportional to 2,220.46, 3,064.32 and 1,225.72 is: 1,691.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.46 : 3,064.32 = 1,225.72 : x
  2. Step 2: Convert to fraction form
    2,220.46/3,064.32 = 1,225.72/x
  3. Step 3: Cross multiply
    2,220.46x = 3,064.32 × 1,225.72
  4. Step 4: Simplify right side
    2,220.46x = 3,755,998.31
  5. Step 5: Solve for x
    x = 3,755,998.31/2,220.46
  6. Step 6: Final answer
    x = 1,691.54

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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.