Home / 7,913.40-11,868.48-2,719.68

Finding the Fourth Proportional to 7,913.40, 11,868.48 and 2,719.68

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Solution

The fourth proportional to 7,913.40, 11,868.48 and 2,719.68 is: 4,078.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.40 : 11,868.48 = 2,719.68 : x
  2. Step 2: Convert to fraction form
    7,913.40/11,868.48 = 2,719.68/x
  3. Step 3: Cross multiply
    7,913.40x = 11,868.48 × 2,719.68
  4. Step 4: Simplify right side
    7,913.40x = 32,278,467.69
  5. Step 5: Solve for x
    x = 32,278,467.69/7,913.40
  6. Step 6: Final answer
    x = 4,078.96

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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.