Home / 3,251.30-4,878.15-3,131.30

Finding the Fourth Proportional to 3,251.30, 4,878.15 and 3,131.30

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Solution

The fourth proportional to 3,251.30, 4,878.15 and 3,131.30 is: 4,698.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.30 : 4,878.15 = 3,131.30 : x
  2. Step 2: Convert to fraction form
    3,251.30/4,878.15 = 3,131.30/x
  3. Step 3: Cross multiply
    3,251.30x = 4,878.15 × 3,131.30
  4. Step 4: Simplify right side
    3,251.30x = 15,274,951.10
  5. Step 5: Solve for x
    x = 15,274,951.10/3,251.30
  6. Step 6: Final answer
    x = 4,698.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.