Home / 5,170.65-7,755.93-1,275.09

Finding the Fourth Proportional to 5,170.65, 7,755.93 and 1,275.09

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Solution

The fourth proportional to 5,170.65, 7,755.93 and 1,275.09 is: 1,912.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.65 : 7,755.93 = 1,275.09 : x
  2. Step 2: Convert to fraction form
    5,170.65/7,755.93 = 1,275.09/x
  3. Step 3: Cross multiply
    5,170.65x = 7,755.93 × 1,275.09
  4. Step 4: Simplify right side
    5,170.65x = 9,889,508.78
  5. Step 5: Solve for x
    x = 9,889,508.78/5,170.65
  6. Step 6: Final answer
    x = 1,912.62

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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.