Home / 2,620.35-3,617.26-1,781.06

Finding the Fourth Proportional to 2,620.35, 3,617.26 and 1,781.06

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Solution

The fourth proportional to 2,620.35, 3,617.26 and 1,781.06 is: 2,458.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.35 : 3,617.26 = 1,781.06 : x
  2. Step 2: Convert to fraction form
    2,620.35/3,617.26 = 1,781.06/x
  3. Step 3: Cross multiply
    2,620.35x = 3,617.26 × 1,781.06
  4. Step 4: Simplify right side
    2,620.35x = 6,442,534.56
  5. Step 5: Solve for x
    x = 6,442,534.56/2,620.35
  6. Step 6: Final answer
    x = 2,458.65

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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.