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Finding the Fourth Proportional to 6,388, 8,816.28 and 3,593.50

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Solution

The fourth proportional to 6,388, 8,816.28 and 3,593.50 is: 4,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388 : 8,816.28 = 3,593.50 : x
  2. Step 2: Convert to fraction form
    6,388/8,816.28 = 3,593.50/x
  3. Step 3: Cross multiply
    6,388x = 8,816.28 × 3,593.50
  4. Step 4: Simplify right side
    6,388x = 31,681,302.18
  5. Step 5: Solve for x
    x = 31,681,302.18/6,388
  6. Step 6: Final answer
    x = 4,959.50

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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.