Home / 3,215.78-4,439.76-2,468.30

Finding the Fourth Proportional to 3,215.78, 4,439.76 and 2,468.30

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Solution

The fourth proportional to 3,215.78, 4,439.76 and 2,468.30 is: 3,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.78 : 4,439.76 = 2,468.30 : x
  2. Step 2: Convert to fraction form
    3,215.78/4,439.76 = 2,468.30/x
  3. Step 3: Cross multiply
    3,215.78x = 4,439.76 × 2,468.30
  4. Step 4: Simplify right side
    3,215.78x = 10,958,659.61
  5. Step 5: Solve for x
    x = 10,958,659.61/3,215.78
  6. Step 6: Final answer
    x = 3,407.78

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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.