Home / 10,780.09-16,170.13-3,385.19

Finding the Fourth Proportional to 10,780.09, 16,170.13 and 3,385.19

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Solution

The fourth proportional to 10,780.09, 16,170.13 and 3,385.19 is: 5,077.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.09 : 16,170.13 = 3,385.19 : x
  2. Step 2: Convert to fraction form
    10,780.09/16,170.13 = 3,385.19/x
  3. Step 3: Cross multiply
    10,780.09x = 16,170.13 × 3,385.19
  4. Step 4: Simplify right side
    10,780.09x = 54,738,962.37
  5. Step 5: Solve for x
    x = 54,738,962.37/10,780.09
  6. Step 6: Final answer
    x = 5,077.78

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1.5x scale

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.