Home / 5,111.12-7,668.86-2,799.92

Finding the Fourth Proportional to 5,111.12, 7,668.86 and 2,799.92

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Solution

The fourth proportional to 5,111.12, 7,668.86 and 2,799.92 is: 4,201.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.12 : 7,668.86 = 2,799.92 : x
  2. Step 2: Convert to fraction form
    5,111.12/7,668.86 = 2,799.92/x
  3. Step 3: Cross multiply
    5,111.12x = 7,668.86 × 2,799.92
  4. Step 4: Simplify right side
    5,111.12x = 21,472,194.49
  5. Step 5: Solve for x
    x = 21,472,194.49/5,111.12
  6. Step 6: Final answer
    x = 4,201.07

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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.