Home / 5,423.46-8,135.19-2,138.10

Finding the Fourth Proportional to 5,423.46, 8,135.19 and 2,138.10

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Solution

The fourth proportional to 5,423.46, 8,135.19 and 2,138.10 is: 3,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.46 : 8,135.19 = 2,138.10 : x
  2. Step 2: Convert to fraction form
    5,423.46/8,135.19 = 2,138.10/x
  3. Step 3: Cross multiply
    5,423.46x = 8,135.19 × 2,138.10
  4. Step 4: Simplify right side
    5,423.46x = 17,393,849.74
  5. Step 5: Solve for x
    x = 17,393,849.74/5,423.46
  6. Step 6: Final answer
    x = 3,207.15

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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.