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Finding the Fourth Proportional to 5,868.12, 8,805.65 and 2,172.95

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Solution

The fourth proportional to 5,868.12, 8,805.65 and 2,172.95 is: 3,260.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,868.12 : 8,805.65 = 2,172.95 : x
  2. Step 2: Convert to fraction form
    5,868.12/8,805.65 = 2,172.95/x
  3. Step 3: Cross multiply
    5,868.12x = 8,805.65 × 2,172.95
  4. Step 4: Simplify right side
    5,868.12x = 19,134,237.17
  5. Step 5: Solve for x
    x = 19,134,237.17/5,868.12
  6. Step 6: Final answer
    x = 3,260.71

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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.