Home / 7,869.11-11,800.49-3,188.16

Finding the Fourth Proportional to 7,869.11, 11,800.49 and 3,188.16

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Solution

The fourth proportional to 7,869.11, 11,800.49 and 3,188.16 is: 4,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.11 : 11,800.49 = 3,188.16 : x
  2. Step 2: Convert to fraction form
    7,869.11/11,800.49 = 3,188.16/x
  3. Step 3: Cross multiply
    7,869.11x = 11,800.49 × 3,188.16
  4. Step 4: Simplify right side
    7,869.11x = 37,621,834.26
  5. Step 5: Solve for x
    x = 37,621,834.26/7,869.11
  6. Step 6: Final answer
    x = 4,780.95

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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.