Home / 8,140.38-12,202.34-3,208.10

Finding the Fourth Proportional to 8,140.38, 12,202.34 and 3,208.10

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Solution

The fourth proportional to 8,140.38, 12,202.34 and 3,208.10 is: 4,808.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.38 : 12,202.34 = 3,208.10 : x
  2. Step 2: Convert to fraction form
    8,140.38/12,202.34 = 3,208.10/x
  3. Step 3: Cross multiply
    8,140.38x = 12,202.34 × 3,208.10
  4. Step 4: Simplify right side
    8,140.38x = 39,146,326.95
  5. Step 5: Solve for x
    x = 39,146,326.95/8,140.38
  6. Step 6: Final answer
    x = 4,808.91

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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.