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Finding the Fourth Proportional to 6,288.71, 8,679.11 and 3,636

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Solution

The fourth proportional to 6,288.71, 8,679.11 and 3,636 is: 5,018.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,288.71 : 8,679.11 = 3,636 : x
  2. Step 2: Convert to fraction form
    6,288.71/8,679.11 = 3,636/x
  3. Step 3: Cross multiply
    6,288.71x = 8,679.11 × 3,636
  4. Step 4: Simplify right side
    6,288.71x = 31,557,225.78
  5. Step 5: Solve for x
    x = 31,557,225.78/6,288.71
  6. Step 6: Final answer
    x = 5,018.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.