Home / 3,239.38-4,471.86-2,120.35

Finding the Fourth Proportional to 3,239.38, 4,471.86 and 2,120.35

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Solution

The fourth proportional to 3,239.38, 4,471.86 and 2,120.35 is: 2,927.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.38 : 4,471.86 = 2,120.35 : x
  2. Step 2: Convert to fraction form
    3,239.38/4,471.86 = 2,120.35/x
  3. Step 3: Cross multiply
    3,239.38x = 4,471.86 × 2,120.35
  4. Step 4: Simplify right side
    3,239.38x = 9,481,908.35
  5. Step 5: Solve for x
    x = 9,481,908.35/3,239.38
  6. Step 6: Final answer
    x = 2,927.08

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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.