Home / 5,245.11-7,867.69-2,125.18

Finding the Fourth Proportional to 5,245.11, 7,867.69 and 2,125.18

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Solution

The fourth proportional to 5,245.11, 7,867.69 and 2,125.18 is: 3,187.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.11 : 7,867.69 = 2,125.18 : x
  2. Step 2: Convert to fraction form
    5,245.11/7,867.69 = 2,125.18/x
  3. Step 3: Cross multiply
    5,245.11x = 7,867.69 × 2,125.18
  4. Step 4: Simplify right side
    5,245.11x = 16,720,218.10
  5. Step 5: Solve for x
    x = 16,720,218.10/5,245.11
  6. Step 6: Final answer
    x = 3,187.77

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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.