Home / 3,131.46-4,320.54-2,895.75

Finding the Fourth Proportional to 3,131.46, 4,320.54 and 2,895.75

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Solution

The fourth proportional to 3,131.46, 4,320.54 and 2,895.75 is: 3,995.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.46 : 4,320.54 = 2,895.75 : x
  2. Step 2: Convert to fraction form
    3,131.46/4,320.54 = 2,895.75/x
  3. Step 3: Cross multiply
    3,131.46x = 4,320.54 × 2,895.75
  4. Step 4: Simplify right side
    3,131.46x = 12,511,203.71
  5. Step 5: Solve for x
    x = 12,511,203.71/3,131.46
  6. Step 6: Final answer
    x = 3,995.33

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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.