Home / 3,171.38-4,756.30-1,321.49

Finding the Fourth Proportional to 3,171.38, 4,756.30 and 1,321.49

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Solution

The fourth proportional to 3,171.38, 4,756.30 and 1,321.49 is: 1,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.38 : 4,756.30 = 1,321.49 : x
  2. Step 2: Convert to fraction form
    3,171.38/4,756.30 = 1,321.49/x
  3. Step 3: Cross multiply
    3,171.38x = 4,756.30 × 1,321.49
  4. Step 4: Simplify right side
    3,171.38x = 6,285,402.89
  5. Step 5: Solve for x
    x = 6,285,402.89/3,171.38
  6. Step 6: Final answer
    x = 1,981.91

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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.