Home / 5,135.20-7,703.43-2,212.90

Finding the Fourth Proportional to 5,135.20, 7,703.43 and 2,212.90

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Solution

The fourth proportional to 5,135.20, 7,703.43 and 2,212.90 is: 3,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.20 : 7,703.43 = 2,212.90 : x
  2. Step 2: Convert to fraction form
    5,135.20/7,703.43 = 2,212.90/x
  3. Step 3: Cross multiply
    5,135.20x = 7,703.43 × 2,212.90
  4. Step 4: Simplify right side
    5,135.20x = 17,046,920.25
  5. Step 5: Solve for x
    x = 17,046,920.25/5,135.20
  6. Step 6: Final answer
    x = 3,319.62

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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.