Home / 5,142.92-7,719.23-2,805.26

Finding the Fourth Proportional to 5,142.92, 7,719.23 and 2,805.26

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Solution

The fourth proportional to 5,142.92, 7,719.23 and 2,805.26 is: 4,210.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.92 : 7,719.23 = 2,805.26 : x
  2. Step 2: Convert to fraction form
    5,142.92/7,719.23 = 2,805.26/x
  3. Step 3: Cross multiply
    5,142.92x = 7,719.23 × 2,805.26
  4. Step 4: Simplify right side
    5,142.92x = 21,654,415.57
  5. Step 5: Solve for x
    x = 21,654,415.57/5,142.92
  6. Step 6: Final answer
    x = 4,210.53

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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.