Home / 7,977.39-11,968.68-3,816.87

Finding the Fourth Proportional to 7,977.39, 11,968.68 and 3,816.87

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Solution

The fourth proportional to 7,977.39, 11,968.68 and 3,816.87 is: 5,726.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.39 : 11,968.68 = 3,816.87 : x
  2. Step 2: Convert to fraction form
    7,977.39/11,968.68 = 3,816.87/x
  3. Step 3: Cross multiply
    7,977.39x = 11,968.68 × 3,816.87
  4. Step 4: Simplify right side
    7,977.39x = 45,682,895.63
  5. Step 5: Solve for x
    x = 45,682,895.63/7,977.39
  6. Step 6: Final answer
    x = 5,726.55

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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.