Home / 2,919.13-4,374.85-1,186.81

Finding the Fourth Proportional to 2,919.13, 4,374.85 and 1,186.81

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Solution

The fourth proportional to 2,919.13, 4,374.85 and 1,186.81 is: 1,778.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.13 : 4,374.85 = 1,186.81 : x
  2. Step 2: Convert to fraction form
    2,919.13/4,374.85 = 1,186.81/x
  3. Step 3: Cross multiply
    2,919.13x = 4,374.85 × 1,186.81
  4. Step 4: Simplify right side
    2,919.13x = 5,192,115.73
  5. Step 5: Solve for x
    x = 5,192,115.73/2,919.13
  6. Step 6: Final answer
    x = 1,778.65

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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.