Home / 5,424.90-8,138.61-2,137.74

Finding the Fourth Proportional to 5,424.90, 8,138.61 and 2,137.74

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Solution

The fourth proportional to 5,424.90, 8,138.61 and 2,137.74 is: 3,207.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.90 : 8,138.61 = 2,137.74 : x
  2. Step 2: Convert to fraction form
    5,424.90/8,138.61 = 2,137.74/x
  3. Step 3: Cross multiply
    5,424.90x = 8,138.61 × 2,137.74
  4. Step 4: Simplify right side
    5,424.90x = 17,398,232.14
  5. Step 5: Solve for x
    x = 17,398,232.14/5,424.90
  6. Step 6: Final answer
    x = 3,207.11

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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.