Home / 5,138.73-7,709.61-2,175.65

Finding the Fourth Proportional to 5,138.73, 7,709.61 and 2,175.65

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Solution

The fourth proportional to 5,138.73, 7,709.61 and 2,175.65 is: 3,264.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.73 : 7,709.61 = 2,175.65 : x
  2. Step 2: Convert to fraction form
    5,138.73/7,709.61 = 2,175.65/x
  3. Step 3: Cross multiply
    5,138.73x = 7,709.61 × 2,175.65
  4. Step 4: Simplify right side
    5,138.73x = 16,773,374.45
  5. Step 5: Solve for x
    x = 16,773,374.45/5,138.73
  6. Step 6: Final answer
    x = 3,264.11

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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.