Home / 2,220.55-3,064.26-1,225.78

Finding the Fourth Proportional to 2,220.55, 3,064.26 and 1,225.78

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Solution

The fourth proportional to 2,220.55, 3,064.26 and 1,225.78 is: 1,691.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.55 : 3,064.26 = 1,225.78 : x
  2. Step 2: Convert to fraction form
    2,220.55/3,064.26 = 1,225.78/x
  3. Step 3: Cross multiply
    2,220.55x = 3,064.26 × 1,225.78
  4. Step 4: Simplify right side
    2,220.55x = 3,756,108.62
  5. Step 5: Solve for x
    x = 3,756,108.62/2,220.55
  6. Step 6: Final answer
    x = 1,691.52

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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.