Home / 2,220.45-3,064.16-1,225.66

Finding the Fourth Proportional to 2,220.45, 3,064.16 and 1,225.66

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Solution

The fourth proportional to 2,220.45, 3,064.16 and 1,225.66 is: 1,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.45 : 3,064.16 = 1,225.66 : x
  2. Step 2: Convert to fraction form
    2,220.45/3,064.16 = 1,225.66/x
  3. Step 3: Cross multiply
    2,220.45x = 3,064.16 × 1,225.66
  4. Step 4: Simplify right side
    2,220.45x = 3,755,596.90
  5. Step 5: Solve for x
    x = 3,755,596.90/2,220.45
  6. Step 6: Final answer
    x = 1,691.37

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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.