Home / 1,550.67-2,139.96-961.53

Finding the Fourth Proportional to 1,550.67, 2,139.96 and 961.53

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Solution

The fourth proportional to 1,550.67, 2,139.96 and 961.53 is: 1,326.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.67 : 2,139.96 = 961.53 : x
  2. Step 2: Convert to fraction form
    1,550.67/2,139.96 = 961.53/x
  3. Step 3: Cross multiply
    1,550.67x = 2,139.96 × 961.53
  4. Step 4: Simplify right side
    1,550.67x = 2,057,635.74
  5. Step 5: Solve for x
    x = 2,057,635.74/1,550.67
  6. Step 6: Final answer
    x = 1,326.93

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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.