Home / 3,171.31-4,366.47-2,879.71

Finding the Fourth Proportional to 3,171.31, 4,366.47 and 2,879.71

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Solution

The fourth proportional to 3,171.31, 4,366.47 and 2,879.71 is: 3,964.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.31 : 4,366.47 = 2,879.71 : x
  2. Step 2: Convert to fraction form
    3,171.31/4,366.47 = 2,879.71/x
  3. Step 3: Cross multiply
    3,171.31x = 4,366.47 × 2,879.71
  4. Step 4: Simplify right side
    3,171.31x = 12,574,167.32
  5. Step 5: Solve for x
    x = 12,574,167.32/3,171.31
  6. Step 6: Final answer
    x = 3,964.98

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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.