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Finding the Fourth Proportional to 3,618.76, 4,991.25 and 2,769.92

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Solution

The fourth proportional to 3,618.76, 4,991.25 and 2,769.92 is: 3,820.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.76 : 4,991.25 = 2,769.92 : x
  2. Step 2: Convert to fraction form
    3,618.76/4,991.25 = 2,769.92/x
  3. Step 3: Cross multiply
    3,618.76x = 4,991.25 × 2,769.92
  4. Step 4: Simplify right side
    3,618.76x = 13,825,363.20
  5. Step 5: Solve for x
    x = 13,825,363.20/3,618.76
  6. Step 6: Final answer
    x = 3,820.47

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1.5x scale

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.