Home / 4,775.11-7,158.59-1,811.90

Finding the Fourth Proportional to 4,775.11, 7,158.59 and 1,811.90

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Solution

The fourth proportional to 4,775.11, 7,158.59 and 1,811.90 is: 2,716.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,775.11 : 7,158.59 = 1,811.90 : x
  2. Step 2: Convert to fraction form
    4,775.11/7,158.59 = 1,811.90/x
  3. Step 3: Cross multiply
    4,775.11x = 7,158.59 × 1,811.90
  4. Step 4: Simplify right side
    4,775.11x = 12,970,613.43
  5. Step 5: Solve for x
    x = 12,970,613.43/4,775.11
  6. Step 6: Final answer
    x = 2,716.30

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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.