Home / 2,116.20-3,174.48-961.68

Finding the Fourth Proportional to 2,116.20, 3,174.48 and 961.68

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Solution

The fourth proportional to 2,116.20, 3,174.48 and 961.68 is: 1,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.20 : 3,174.48 = 961.68 : x
  2. Step 2: Convert to fraction form
    2,116.20/3,174.48 = 961.68/x
  3. Step 3: Cross multiply
    2,116.20x = 3,174.48 × 961.68
  4. Step 4: Simplify right side
    2,116.20x = 3,052,833.93
  5. Step 5: Solve for x
    x = 3,052,833.93/2,116.20
  6. Step 6: Final answer
    x = 1,442.60

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1.5x scale

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.