Home / 2,220.32-3,064.05-1,225.61

Finding the Fourth Proportional to 2,220.32, 3,064.05 and 1,225.61

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Solution

The fourth proportional to 2,220.32, 3,064.05 and 1,225.61 is: 1,691.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.32 : 3,064.05 = 1,225.61 : x
  2. Step 2: Convert to fraction form
    2,220.32/3,064.05 = 1,225.61/x
  3. Step 3: Cross multiply
    2,220.32x = 3,064.05 × 1,225.61
  4. Step 4: Simplify right side
    2,220.32x = 3,755,315.00
  5. Step 5: Solve for x
    x = 3,755,315.00/2,220.32
  6. Step 6: Final answer
    x = 1,691.34

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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.