Home / 2,781.13-4,164.64-1,669.86

Finding the Fourth Proportional to 2,781.13, 4,164.64 and 1,669.86

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Solution

The fourth proportional to 2,781.13, 4,164.64 and 1,669.86 is: 2,500.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.13 : 4,164.64 = 1,669.86 : x
  2. Step 2: Convert to fraction form
    2,781.13/4,164.64 = 1,669.86/x
  3. Step 3: Cross multiply
    2,781.13x = 4,164.64 × 1,669.86
  4. Step 4: Simplify right side
    2,781.13x = 6,954,365.75
  5. Step 5: Solve for x
    x = 6,954,365.75/2,781.13
  6. Step 6: Final answer
    x = 2,500.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.