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Finding the Fourth Proportional to 6,991.44, 10,477.27 and 3,872.87

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Solution

The fourth proportional to 6,991.44, 10,477.27 and 3,872.87 is: 5,803.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.44 : 10,477.27 = 3,872.87 : x
  2. Step 2: Convert to fraction form
    6,991.44/10,477.27 = 3,872.87/x
  3. Step 3: Cross multiply
    6,991.44x = 10,477.27 × 3,872.87
  4. Step 4: Simplify right side
    6,991.44x = 40,577,085.30
  5. Step 5: Solve for x
    x = 40,577,085.30/6,991.44
  6. Step 6: Final answer
    x = 5,803.83

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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.