Home / 2,221.53-3,334.11-1,126.21

Finding the Fourth Proportional to 2,221.53, 3,334.11 and 1,126.21

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Solution

The fourth proportional to 2,221.53, 3,334.11 and 1,126.21 is: 1,690.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.53 : 3,334.11 = 1,126.21 : x
  2. Step 2: Convert to fraction form
    2,221.53/3,334.11 = 1,126.21/x
  3. Step 3: Cross multiply
    2,221.53x = 3,334.11 × 1,126.21
  4. Step 4: Simplify right side
    2,221.53x = 3,754,902.39
  5. Step 5: Solve for x
    x = 3,754,902.39/2,221.53
  6. Step 6: Final answer
    x = 1,690.23

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.