Home / 5,166.49-7,129.46-2,808.61

Finding the Fourth Proportional to 5,166.49, 7,129.46 and 2,808.61

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Solution

The fourth proportional to 5,166.49, 7,129.46 and 2,808.61 is: 3,875.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.49 : 7,129.46 = 2,808.61 : x
  2. Step 2: Convert to fraction form
    5,166.49/7,129.46 = 2,808.61/x
  3. Step 3: Cross multiply
    5,166.49x = 7,129.46 × 2,808.61
  4. Step 4: Simplify right side
    5,166.49x = 20,023,872.65
  5. Step 5: Solve for x
    x = 20,023,872.65/5,166.49
  6. Step 6: Final answer
    x = 3,875.72

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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.