Home / 3,119.55-4,305.39-2,174.73

Finding the Fourth Proportional to 3,119.55, 4,305.39 and 2,174.73

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Solution

The fourth proportional to 3,119.55, 4,305.39 and 2,174.73 is: 3,001.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.55 : 4,305.39 = 2,174.73 : x
  2. Step 2: Convert to fraction form
    3,119.55/4,305.39 = 2,174.73/x
  3. Step 3: Cross multiply
    3,119.55x = 4,305.39 × 2,174.73
  4. Step 4: Simplify right side
    3,119.55x = 9,363,060.79
  5. Step 5: Solve for x
    x = 9,363,060.79/3,119.55
  6. Step 6: Final answer
    x = 3,001.41

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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.