Home / 1,545.82-2,319.87-961.68

Finding the Fourth Proportional to 1,545.82, 2,319.87 and 961.68

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Solution

The fourth proportional to 1,545.82, 2,319.87 and 961.68 is: 1,443.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.82 : 2,319.87 = 961.68 : x
  2. Step 2: Convert to fraction form
    1,545.82/2,319.87 = 961.68/x
  3. Step 3: Cross multiply
    1,545.82x = 2,319.87 × 961.68
  4. Step 4: Simplify right side
    1,545.82x = 2,230,978.78
  5. Step 5: Solve for x
    x = 2,230,978.78/1,545.82
  6. Step 6: Final answer
    x = 1,443.23

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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.