Home / 2,919.22-4,378.82-1,186.62

Finding the Fourth Proportional to 2,919.22, 4,378.82 and 1,186.62

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Solution

The fourth proportional to 2,919.22, 4,378.82 and 1,186.62 is: 1,779.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.22 : 4,378.82 = 1,186.62 : x
  2. Step 2: Convert to fraction form
    2,919.22/4,378.82 = 1,186.62/x
  3. Step 3: Cross multiply
    2,919.22x = 4,378.82 × 1,186.62
  4. Step 4: Simplify right side
    2,919.22x = 5,195,995.39
  5. Step 5: Solve for x
    x = 5,195,995.39/2,919.22
  6. Step 6: Final answer
    x = 1,779.93

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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.