Home / 10,977.20-16,468.48-3,186.80

Finding the Fourth Proportional to 10,977.20, 16,468.48 and 3,186.80

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Solution

The fourth proportional to 10,977.20, 16,468.48 and 3,186.80 is: 4,780.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,977.20 : 16,468.48 = 3,186.80 : x
  2. Step 2: Convert to fraction form
    10,977.20/16,468.48 = 3,186.80/x
  3. Step 3: Cross multiply
    10,977.20x = 16,468.48 × 3,186.80
  4. Step 4: Simplify right side
    10,977.20x = 52,481,752.06
  5. Step 5: Solve for x
    x = 52,481,752.06/10,977.20
  6. Step 6: Final answer
    x = 4,780.98

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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.