Home / 5,078.92-7,621.76-1,792

Finding the Fourth Proportional to 5,078.92, 7,621.76 and 1,792

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Solution

The fourth proportional to 5,078.92, 7,621.76 and 1,792 is: 2,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.92 : 7,621.76 = 1,792 : x
  2. Step 2: Convert to fraction form
    5,078.92/7,621.76 = 1,792/x
  3. Step 3: Cross multiply
    5,078.92x = 7,621.76 × 1,792
  4. Step 4: Simplify right side
    5,078.92x = 13,658,193.92
  5. Step 5: Solve for x
    x = 13,658,193.92/5,078.92
  6. Step 6: Final answer
    x = 2,689.19

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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.