Home / 3,377.38-4,661.32-1,980.13

Finding the Fourth Proportional to 3,377.38, 4,661.32 and 1,980.13

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Solution

The fourth proportional to 3,377.38, 4,661.32 and 1,980.13 is: 2,732.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,377.38 : 4,661.32 = 1,980.13 : x
  2. Step 2: Convert to fraction form
    3,377.38/4,661.32 = 1,980.13/x
  3. Step 3: Cross multiply
    3,377.38x = 4,661.32 × 1,980.13
  4. Step 4: Simplify right side
    3,377.38x = 9,229,996.27
  5. Step 5: Solve for x
    x = 9,229,996.27/3,377.38
  6. Step 6: Final answer
    x = 2,732.89

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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.