Home / 5,319.92-7,971.78-2,542.78

Finding the Fourth Proportional to 5,319.92, 7,971.78 and 2,542.78

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Solution

The fourth proportional to 5,319.92, 7,971.78 and 2,542.78 is: 3,810.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.92 : 7,971.78 = 2,542.78 : x
  2. Step 2: Convert to fraction form
    5,319.92/7,971.78 = 2,542.78/x
  3. Step 3: Cross multiply
    5,319.92x = 7,971.78 × 2,542.78
  4. Step 4: Simplify right side
    5,319.92x = 20,270,442.89
  5. Step 5: Solve for x
    x = 20,270,442.89/5,319.92
  6. Step 6: Final answer
    x = 3,810.29

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1.5x scale

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.