Home / 5,408.46-8,113.08-2,121.54

Finding the Fourth Proportional to 5,408.46, 8,113.08 and 2,121.54

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Solution

The fourth proportional to 5,408.46, 8,113.08 and 2,121.54 is: 3,182.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.46 : 8,113.08 = 2,121.54 : x
  2. Step 2: Convert to fraction form
    5,408.46/8,113.08 = 2,121.54/x
  3. Step 3: Cross multiply
    5,408.46x = 8,113.08 × 2,121.54
  4. Step 4: Simplify right side
    5,408.46x = 17,212,223.74
  5. Step 5: Solve for x
    x = 17,212,223.74/5,408.46
  6. Step 6: Final answer
    x = 3,182.46

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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.