Home / 7,914.80-11,869.40-2,719.46

Finding the Fourth Proportional to 7,914.80, 11,869.40 and 2,719.46

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Solution

The fourth proportional to 7,914.80, 11,869.40 and 2,719.46 is: 4,078.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,914.80 : 11,869.40 = 2,719.46 : x
  2. Step 2: Convert to fraction form
    7,914.80/11,869.40 = 2,719.46/x
  3. Step 3: Cross multiply
    7,914.80x = 11,869.40 × 2,719.46
  4. Step 4: Simplify right side
    7,914.80x = 32,278,358.52
  5. Step 5: Solve for x
    x = 32,278,358.52/7,914.80
  6. Step 6: Final answer
    x = 4,078.23

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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.