Home / 3,122.13-4,301.20-2,176.20

Finding the Fourth Proportional to 3,122.13, 4,301.20 and 2,176.20

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Solution

The fourth proportional to 3,122.13, 4,301.20 and 2,176.20 is: 2,998.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.13 : 4,301.20 = 2,176.20 : x
  2. Step 2: Convert to fraction form
    3,122.13/4,301.20 = 2,176.20/x
  3. Step 3: Cross multiply
    3,122.13x = 4,301.20 × 2,176.20
  4. Step 4: Simplify right side
    3,122.13x = 9,360,271.44
  5. Step 5: Solve for x
    x = 9,360,271.44/3,122.13
  6. Step 6: Final answer
    x = 2,998.04

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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.