Home / 10,405.27-15,608.97-3,385

Finding the Fourth Proportional to 10,405.27, 15,608.97 and 3,385

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Solution

The fourth proportional to 10,405.27, 15,608.97 and 3,385 is: 5,077.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.27 : 15,608.97 = 3,385 : x
  2. Step 2: Convert to fraction form
    10,405.27/15,608.97 = 3,385/x
  3. Step 3: Cross multiply
    10,405.27x = 15,608.97 × 3,385
  4. Step 4: Simplify right side
    10,405.27x = 52,836,363.45
  5. Step 5: Solve for x
    x = 52,836,363.45/10,405.27
  6. Step 6: Final answer
    x = 5,077.85

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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.