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Finding the Fourth Proportional to 3,846.24, 5,769.36 and 2,990.88

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Solution

The fourth proportional to 3,846.24, 5,769.36 and 2,990.88 is: 4,486.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,846.24 : 5,769.36 = 2,990.88 : x
  2. Step 2: Convert to fraction form
    3,846.24/5,769.36 = 2,990.88/x
  3. Step 3: Cross multiply
    3,846.24x = 5,769.36 × 2,990.88
  4. Step 4: Simplify right side
    3,846.24x = 17,255,463.44
  5. Step 5: Solve for x
    x = 17,255,463.44/3,846.24
  6. Step 6: Final answer
    x = 4,486.32

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1.5x scale

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.