Home / 7,815.28-11,719.14-2,617.48

Finding the Fourth Proportional to 7,815.28, 11,719.14 and 2,617.48

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Solution

The fourth proportional to 7,815.28, 11,719.14 and 2,617.48 is: 3,924.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.28 : 11,719.14 = 2,617.48 : x
  2. Step 2: Convert to fraction form
    7,815.28/11,719.14 = 2,617.48/x
  3. Step 3: Cross multiply
    7,815.28x = 11,719.14 × 2,617.48
  4. Step 4: Simplify right side
    7,815.28x = 30,674,614.57
  5. Step 5: Solve for x
    x = 30,674,614.57/7,815.28
  6. Step 6: Final answer
    x = 3,924.95

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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.