Home / 2,641.10-3,979.80-2,189.03

Finding the Fourth Proportional to 2,641.10, 3,979.80 and 2,189.03

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Solution

The fourth proportional to 2,641.10, 3,979.80 and 2,189.03 is: 3,298.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.10 : 3,979.80 = 2,189.03 : x
  2. Step 2: Convert to fraction form
    2,641.10/3,979.80 = 2,189.03/x
  3. Step 3: Cross multiply
    2,641.10x = 3,979.80 × 2,189.03
  4. Step 4: Simplify right side
    2,641.10x = 8,711,881.70
  5. Step 5: Solve for x
    x = 8,711,881.70/2,641.10
  6. Step 6: Final answer
    x = 3,298.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.