Home / 7,912.40-11,869.28-2,069

Finding the Fourth Proportional to 7,912.40, 11,869.28 and 2,069

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Solution

The fourth proportional to 7,912.40, 11,869.28 and 2,069 is: 3,103.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.40 : 11,869.28 = 2,069 : x
  2. Step 2: Convert to fraction form
    7,912.40/11,869.28 = 2,069/x
  3. Step 3: Cross multiply
    7,912.40x = 11,869.28 × 2,069
  4. Step 4: Simplify right side
    7,912.40x = 24,557,535.15
  5. Step 5: Solve for x
    x = 24,557,535.15/7,912.40
  6. Step 6: Final answer
    x = 3,103.68

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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.