Home / 1,781.85-2,669.69-1,086.36

Finding the Fourth Proportional to 1,781.85, 2,669.69 and 1,086.36

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Solution

The fourth proportional to 1,781.85, 2,669.69 and 1,086.36 is: 1,627.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.85 : 2,669.69 = 1,086.36 : x
  2. Step 2: Convert to fraction form
    1,781.85/2,669.69 = 1,086.36/x
  3. Step 3: Cross multiply
    1,781.85x = 2,669.69 × 1,086.36
  4. Step 4: Simplify right side
    1,781.85x = 2,900,239.00
  5. Step 5: Solve for x
    x = 2,900,239.00/1,781.85
  6. Step 6: Final answer
    x = 1,627.66

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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.