Home / 3,927.59-5,414.47-2,808.12

Finding the Fourth Proportional to 3,927.59, 5,414.47 and 2,808.12

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Solution

The fourth proportional to 3,927.59, 5,414.47 and 2,808.12 is: 3,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.59 : 5,414.47 = 2,808.12 : x
  2. Step 2: Convert to fraction form
    3,927.59/5,414.47 = 2,808.12/x
  3. Step 3: Cross multiply
    3,927.59x = 5,414.47 × 2,808.12
  4. Step 4: Simplify right side
    3,927.59x = 15,204,481.50
  5. Step 5: Solve for x
    x = 15,204,481.50/3,927.59
  6. Step 6: Final answer
    x = 3,871.20

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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.