Home / 11,768.90-17,652.80-3,977.78

Finding the Fourth Proportional to 11,768.90, 17,652.80 and 3,977.78

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Solution

The fourth proportional to 11,768.90, 17,652.80 and 3,977.78 is: 5,966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,768.90 : 17,652.80 = 3,977.78 : x
  2. Step 2: Convert to fraction form
    11,768.90/17,652.80 = 3,977.78/x
  3. Step 3: Cross multiply
    11,768.90x = 17,652.80 × 3,977.78
  4. Step 4: Simplify right side
    11,768.90x = 70,218,866.52
  5. Step 5: Solve for x
    x = 70,218,866.52/11,768.90
  6. Step 6: Final answer
    x = 5,966.48

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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.