Home / 3,150.20-4,718.10-1,983.80

Finding the Fourth Proportional to 3,150.20, 4,718.10 and 1,983.80

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Solution

The fourth proportional to 3,150.20, 4,718.10 and 1,983.80 is: 2,971.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.20 : 4,718.10 = 1,983.80 : x
  2. Step 2: Convert to fraction form
    3,150.20/4,718.10 = 1,983.80/x
  3. Step 3: Cross multiply
    3,150.20x = 4,718.10 × 1,983.80
  4. Step 4: Simplify right side
    3,150.20x = 9,359,766.78
  5. Step 5: Solve for x
    x = 9,359,766.78/3,150.20
  6. Step 6: Final answer
    x = 2,971.17

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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.