Home / 2,221.21-3,333.88-1,126.34

Finding the Fourth Proportional to 2,221.21, 3,333.88 and 1,126.34

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Solution

The fourth proportional to 2,221.21, 3,333.88 and 1,126.34 is: 1,690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.21 : 3,333.88 = 1,126.34 : x
  2. Step 2: Convert to fraction form
    2,221.21/3,333.88 = 1,126.34/x
  3. Step 3: Cross multiply
    2,221.21x = 3,333.88 × 1,126.34
  4. Step 4: Simplify right side
    2,221.21x = 3,755,082.81
  5. Step 5: Solve for x
    x = 3,755,082.81/2,221.21
  6. Step 6: Final answer
    x = 1,690.56

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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.