Home / 3,959.12-5,463.78-2,280.79

Finding the Fourth Proportional to 3,959.12, 5,463.78 and 2,280.79

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Solution

The fourth proportional to 3,959.12, 5,463.78 and 2,280.79 is: 3,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.12 : 5,463.78 = 2,280.79 : x
  2. Step 2: Convert to fraction form
    3,959.12/5,463.78 = 2,280.79/x
  3. Step 3: Cross multiply
    3,959.12x = 5,463.78 × 2,280.79
  4. Step 4: Simplify right side
    3,959.12x = 12,461,721.13
  5. Step 5: Solve for x
    x = 12,461,721.13/3,959.12
  6. Step 6: Final answer
    x = 3,147.60

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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.