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Finding the Fourth Proportional to 8,978.28, 13,472.28 and 3,784.02

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Solution

The fourth proportional to 8,978.28, 13,472.28 and 3,784.02 is: 5,678.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978.28 : 13,472.28 = 3,784.02 : x
  2. Step 2: Convert to fraction form
    8,978.28/13,472.28 = 3,784.02/x
  3. Step 3: Cross multiply
    8,978.28x = 13,472.28 × 3,784.02
  4. Step 4: Simplify right side
    8,978.28x = 50,979,376.97
  5. Step 5: Solve for x
    x = 50,979,376.97/8,978.28
  6. Step 6: Final answer
    x = 5,678.08

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.