Home / 3,211.74-4,808.50-2,102.45

Finding the Fourth Proportional to 3,211.74, 4,808.50 and 2,102.45

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Solution

The fourth proportional to 3,211.74, 4,808.50 and 2,102.45 is: 3,147.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.74 : 4,808.50 = 2,102.45 : x
  2. Step 2: Convert to fraction form
    3,211.74/4,808.50 = 2,102.45/x
  3. Step 3: Cross multiply
    3,211.74x = 4,808.50 × 2,102.45
  4. Step 4: Simplify right side
    3,211.74x = 10,109,630.83
  5. Step 5: Solve for x
    x = 10,109,630.83/3,211.74
  6. Step 6: Final answer
    x = 3,147.71

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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.