Home / 3,211.66-4,425.87-2,278.54

Finding the Fourth Proportional to 3,211.66, 4,425.87 and 2,278.54

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Solution

The fourth proportional to 3,211.66, 4,425.87 and 2,278.54 is: 3,139.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.66 : 4,425.87 = 2,278.54 : x
  2. Step 2: Convert to fraction form
    3,211.66/4,425.87 = 2,278.54/x
  3. Step 3: Cross multiply
    3,211.66x = 4,425.87 × 2,278.54
  4. Step 4: Simplify right side
    3,211.66x = 10,084,521.83
  5. Step 5: Solve for x
    x = 10,084,521.83/3,211.66
  6. Step 6: Final answer
    x = 3,139.97

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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.