Home / 2,261.20-3,120.28-1,266.34

Finding the Fourth Proportional to 2,261.20, 3,120.28 and 1,266.34

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Solution

The fourth proportional to 2,261.20, 3,120.28 and 1,266.34 is: 1,747.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.20 : 3,120.28 = 1,266.34 : x
  2. Step 2: Convert to fraction form
    2,261.20/3,120.28 = 1,266.34/x
  3. Step 3: Cross multiply
    2,261.20x = 3,120.28 × 1,266.34
  4. Step 4: Simplify right side
    2,261.20x = 3,951,335.38
  5. Step 5: Solve for x
    x = 3,951,335.38/2,261.20
  6. Step 6: Final answer
    x = 1,747.45

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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.