Home / 5,418.35-8,125.48-2,129.65

Finding the Fourth Proportional to 5,418.35, 8,125.48 and 2,129.65

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Solution

The fourth proportional to 5,418.35, 8,125.48 and 2,129.65 is: 3,193.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.35 : 8,125.48 = 2,129.65 : x
  2. Step 2: Convert to fraction form
    5,418.35/8,125.48 = 2,129.65/x
  3. Step 3: Cross multiply
    5,418.35x = 8,125.48 × 2,129.65
  4. Step 4: Simplify right side
    5,418.35x = 17,304,402.84
  5. Step 5: Solve for x
    x = 17,304,402.84/5,418.35
  6. Step 6: Final answer
    x = 3,193.67

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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.