Home / 3,102.23-4,278.72-2,158.02

Finding the Fourth Proportional to 3,102.23, 4,278.72 and 2,158.02

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Solution

The fourth proportional to 3,102.23, 4,278.72 and 2,158.02 is: 2,976.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.23 : 4,278.72 = 2,158.02 : x
  2. Step 2: Convert to fraction form
    3,102.23/4,278.72 = 2,158.02/x
  3. Step 3: Cross multiply
    3,102.23x = 4,278.72 × 2,158.02
  4. Step 4: Simplify right side
    3,102.23x = 9,233,563.33
  5. Step 5: Solve for x
    x = 9,233,563.33/3,102.23
  6. Step 6: Final answer
    x = 2,976.43

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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.