Home / 2,220.76-3,064.38-1,225.96

Finding the Fourth Proportional to 2,220.76, 3,064.38 and 1,225.96

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Solution

The fourth proportional to 2,220.76, 3,064.38 and 1,225.96 is: 1,691.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.76 : 3,064.38 = 1,225.96 : x
  2. Step 2: Convert to fraction form
    2,220.76/3,064.38 = 1,225.96/x
  3. Step 3: Cross multiply
    2,220.76x = 3,064.38 × 1,225.96
  4. Step 4: Simplify right side
    2,220.76x = 3,756,807.30
  5. Step 5: Solve for x
    x = 3,756,807.30/2,220.76
  6. Step 6: Final answer
    x = 1,691.68

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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.