Home / 1,489.82-2,055.86-826.66

Finding the Fourth Proportional to 1,489.82, 2,055.86 and 826.66

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Solution

The fourth proportional to 1,489.82, 2,055.86 and 826.66 is: 1,140.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.82 : 2,055.86 = 826.66 : x
  2. Step 2: Convert to fraction form
    1,489.82/2,055.86 = 826.66/x
  3. Step 3: Cross multiply
    1,489.82x = 2,055.86 × 826.66
  4. Step 4: Simplify right side
    1,489.82x = 1,699,484.87
  5. Step 5: Solve for x
    x = 1,699,484.87/1,489.82
  6. Step 6: Final answer
    x = 1,140.73

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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.