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Finding the Fourth Proportional to 6,632.80, 9,936.24 and 4,029.28

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Solution

The fourth proportional to 6,632.80, 9,936.24 and 4,029.28 is: 6,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,632.80 : 9,936.24 = 4,029.28 : x
  2. Step 2: Convert to fraction form
    6,632.80/9,936.24 = 4,029.28/x
  3. Step 3: Cross multiply
    6,632.80x = 9,936.24 × 4,029.28
  4. Step 4: Simplify right side
    6,632.80x = 40,035,893.11
  5. Step 5: Solve for x
    x = 40,035,893.11/6,632.80
  6. Step 6: Final answer
    x = 6,036.05

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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.