Home / 5,421.15-8,132.70-2,499.75

Finding the Fourth Proportional to 5,421.15, 8,132.70 and 2,499.75

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Solution

The fourth proportional to 5,421.15, 8,132.70 and 2,499.75 is: 3,750.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.15 : 8,132.70 = 2,499.75 : x
  2. Step 2: Convert to fraction form
    5,421.15/8,132.70 = 2,499.75/x
  3. Step 3: Cross multiply
    5,421.15x = 8,132.70 × 2,499.75
  4. Step 4: Simplify right side
    5,421.15x = 20,329,716.83
  5. Step 5: Solve for x
    x = 20,329,716.83/5,421.15
  6. Step 6: Final answer
    x = 3,750.07

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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.