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Finding the Fourth Proportional to 9,805.28, 14,710.36 and 2,879.78

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Solution

The fourth proportional to 9,805.28, 14,710.36 and 2,879.78 is: 4,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,805.28 : 14,710.36 = 2,879.78 : x
  2. Step 2: Convert to fraction form
    9,805.28/14,710.36 = 2,879.78/x
  3. Step 3: Cross multiply
    9,805.28x = 14,710.36 × 2,879.78
  4. Step 4: Simplify right side
    9,805.28x = 42,362,600.52
  5. Step 5: Solve for x
    x = 42,362,600.52/9,805.28
  6. Step 6: Final answer
    x = 4,320.39

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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.