Home / 5,265.11-7,890.81-2,141.47

Finding the Fourth Proportional to 5,265.11, 7,890.81 and 2,141.47

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Solution

The fourth proportional to 5,265.11, 7,890.81 and 2,141.47 is: 3,209.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,265.11 : 7,890.81 = 2,141.47 : x
  2. Step 2: Convert to fraction form
    5,265.11/7,890.81 = 2,141.47/x
  3. Step 3: Cross multiply
    5,265.11x = 7,890.81 × 2,141.47
  4. Step 4: Simplify right side
    5,265.11x = 16,897,922.18
  5. Step 5: Solve for x
    x = 16,897,922.18/5,265.11
  6. Step 6: Final answer
    x = 3,209.42

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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.