Home / 3,976.31-5,487-2,207.76

Finding the Fourth Proportional to 3,976.31, 5,487 and 2,207.76

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Solution

The fourth proportional to 3,976.31, 5,487 and 2,207.76 is: 3,046.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.31 : 5,487 = 2,207.76 : x
  2. Step 2: Convert to fraction form
    3,976.31/5,487 = 2,207.76/x
  3. Step 3: Cross multiply
    3,976.31x = 5,487 × 2,207.76
  4. Step 4: Simplify right side
    3,976.31x = 12,113,979.12
  5. Step 5: Solve for x
    x = 12,113,979.12/3,976.31
  6. Step 6: Final answer
    x = 3,046.54

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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.