Home / 2,981.97-4,469.88-2,158.20

Finding the Fourth Proportional to 2,981.97, 4,469.88 and 2,158.20

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Solution

The fourth proportional to 2,981.97, 4,469.88 and 2,158.20 is: 3,235.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.97 : 4,469.88 = 2,158.20 : x
  2. Step 2: Convert to fraction form
    2,981.97/4,469.88 = 2,158.20/x
  3. Step 3: Cross multiply
    2,981.97x = 4,469.88 × 2,158.20
  4. Step 4: Simplify right side
    2,981.97x = 9,646,895.02
  5. Step 5: Solve for x
    x = 9,646,895.02/2,981.97
  6. Step 6: Final answer
    x = 3,235.07

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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.