Home / 3,239.13-4,471.52-2,120.12

Finding the Fourth Proportional to 3,239.13, 4,471.52 and 2,120.12

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Solution

The fourth proportional to 3,239.13, 4,471.52 and 2,120.12 is: 2,926.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.13 : 4,471.52 = 2,120.12 : x
  2. Step 2: Convert to fraction form
    3,239.13/4,471.52 = 2,120.12/x
  3. Step 3: Cross multiply
    3,239.13x = 4,471.52 × 2,120.12
  4. Step 4: Simplify right side
    3,239.13x = 9,480,126.02
  5. Step 5: Solve for x
    x = 9,480,126.02/3,239.13
  6. Step 6: Final answer
    x = 2,926.75

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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.