Home / 3,147.72-4,340.08-2,308.11

Finding the Fourth Proportional to 3,147.72, 4,340.08 and 2,308.11

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Solution

The fourth proportional to 3,147.72, 4,340.08 and 2,308.11 is: 3,182.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.72 : 4,340.08 = 2,308.11 : x
  2. Step 2: Convert to fraction form
    3,147.72/4,340.08 = 2,308.11/x
  3. Step 3: Cross multiply
    3,147.72x = 4,340.08 × 2,308.11
  4. Step 4: Simplify right side
    3,147.72x = 10,017,382.05
  5. Step 5: Solve for x
    x = 10,017,382.05/3,147.72
  6. Step 6: Final answer
    x = 3,182.42

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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.