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Finding the Fourth Proportional to 4,991.28, 7,482.77 and 2,769.99

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Solution

The fourth proportional to 4,991.28, 7,482.77 and 2,769.99 is: 4,152.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.28 : 7,482.77 = 2,769.99 : x
  2. Step 2: Convert to fraction form
    4,991.28/7,482.77 = 2,769.99/x
  3. Step 3: Cross multiply
    4,991.28x = 7,482.77 × 2,769.99
  4. Step 4: Simplify right side
    4,991.28x = 20,727,198.07
  5. Step 5: Solve for x
    x = 20,727,198.07/4,991.28
  6. Step 6: Final answer
    x = 4,152.68

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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.