Home / 5,780.39-8,669.79-2,082.11

Finding the Fourth Proportional to 5,780.39, 8,669.79 and 2,082.11

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Solution

The fourth proportional to 5,780.39, 8,669.79 and 2,082.11 is: 3,122.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.39 : 8,669.79 = 2,082.11 : x
  2. Step 2: Convert to fraction form
    5,780.39/8,669.79 = 2,082.11/x
  3. Step 3: Cross multiply
    5,780.39x = 8,669.79 × 2,082.11
  4. Step 4: Simplify right side
    5,780.39x = 18,051,413.11
  5. Step 5: Solve for x
    x = 18,051,413.11/5,780.39
  6. Step 6: Final answer
    x = 3,122.87

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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.