Home / 4,101.68-6,142.71-2,121.98

Finding the Fourth Proportional to 4,101.68, 6,142.71 and 2,121.98

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Solution

The fourth proportional to 4,101.68, 6,142.71 and 2,121.98 is: 3,177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,101.68 : 6,142.71 = 2,121.98 : x
  2. Step 2: Convert to fraction form
    4,101.68/6,142.71 = 2,121.98/x
  3. Step 3: Cross multiply
    4,101.68x = 6,142.71 × 2,121.98
  4. Step 4: Simplify right side
    4,101.68x = 13,034,677.05
  5. Step 5: Solve for x
    x = 13,034,677.05/4,101.68
  6. Step 6: Final answer
    x = 3,177.89

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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.