Home / 5,126.57-7,686.32-2,621.62

Finding the Fourth Proportional to 5,126.57, 7,686.32 and 2,621.62

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Solution

The fourth proportional to 5,126.57, 7,686.32 and 2,621.62 is: 3,930.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.57 : 7,686.32 = 2,621.62 : x
  2. Step 2: Convert to fraction form
    5,126.57/7,686.32 = 2,621.62/x
  3. Step 3: Cross multiply
    5,126.57x = 7,686.32 × 2,621.62
  4. Step 4: Simplify right side
    5,126.57x = 20,150,570.88
  5. Step 5: Solve for x
    x = 20,150,570.88/5,126.57
  6. Step 6: Final answer
    x = 3,930.62

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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.