Home / 2,110.38-3,163.40-878.50

Finding the Fourth Proportional to 2,110.38, 3,163.40 and 878.50

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Solution

The fourth proportional to 2,110.38, 3,163.40 and 878.50 is: 1,316.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.38 : 3,163.40 = 878.50 : x
  2. Step 2: Convert to fraction form
    2,110.38/3,163.40 = 878.50/x
  3. Step 3: Cross multiply
    2,110.38x = 3,163.40 × 878.50
  4. Step 4: Simplify right side
    2,110.38x = 2,779,046.90
  5. Step 5: Solve for x
    x = 2,779,046.90/2,110.38
  6. Step 6: Final answer
    x = 1,316.85

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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.