Home / 1,781.16-2,669.01-1,086.79

Finding the Fourth Proportional to 1,781.16, 2,669.01 and 1,086.79

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Solution

The fourth proportional to 1,781.16, 2,669.01 and 1,086.79 is: 1,628.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.16 : 2,669.01 = 1,086.79 : x
  2. Step 2: Convert to fraction form
    1,781.16/2,669.01 = 1,086.79/x
  3. Step 3: Cross multiply
    1,781.16x = 2,669.01 × 1,086.79
  4. Step 4: Simplify right side
    1,781.16x = 2,900,658.07
  5. Step 5: Solve for x
    x = 2,900,658.07/1,781.16
  6. Step 6: Final answer
    x = 1,628.52

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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.