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Finding the Fourth Proportional to 5,788.65, 8,679.33 and 3,812.15

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Solution

The fourth proportional to 5,788.65, 8,679.33 and 3,812.15 is: 5,715.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,788.65 : 8,679.33 = 3,812.15 : x
  2. Step 2: Convert to fraction form
    5,788.65/8,679.33 = 3,812.15/x
  3. Step 3: Cross multiply
    5,788.65x = 8,679.33 × 3,812.15
  4. Step 4: Simplify right side
    5,788.65x = 33,086,907.86
  5. Step 5: Solve for x
    x = 33,086,907.86/5,788.65
  6. Step 6: Final answer
    x = 5,715.82

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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.