Home / 3,876.31-5,363.39-3,379.99

Finding the Fourth Proportional to 3,876.31, 5,363.39 and 3,379.99

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Solution

The fourth proportional to 3,876.31, 5,363.39 and 3,379.99 is: 4,676.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.31 : 5,363.39 = 3,379.99 : x
  2. Step 2: Convert to fraction form
    3,876.31/5,363.39 = 3,379.99/x
  3. Step 3: Cross multiply
    3,876.31x = 5,363.39 × 3,379.99
  4. Step 4: Simplify right side
    3,876.31x = 18,128,204.57
  5. Step 5: Solve for x
    x = 18,128,204.57/3,876.31
  6. Step 6: Final answer
    x = 4,676.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.