Home / 3,179.12-4,770.55-1,330.08

Finding the Fourth Proportional to 3,179.12, 4,770.55 and 1,330.08

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Solution

The fourth proportional to 3,179.12, 4,770.55 and 1,330.08 is: 1,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.12 : 4,770.55 = 1,330.08 : x
  2. Step 2: Convert to fraction form
    3,179.12/4,770.55 = 1,330.08/x
  3. Step 3: Cross multiply
    3,179.12x = 4,770.55 × 1,330.08
  4. Step 4: Simplify right side
    3,179.12x = 6,345,222.98
  5. Step 5: Solve for x
    x = 6,345,222.98/3,179.12
  6. Step 6: Final answer
    x = 1,995.90

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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.