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Finding the Fourth Proportional to 6,872.42, 9,483.99 and 3,728.63

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Solution

The fourth proportional to 6,872.42, 9,483.99 and 3,728.63 is: 5,145.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.42 : 9,483.99 = 3,728.63 : x
  2. Step 2: Convert to fraction form
    6,872.42/9,483.99 = 3,728.63/x
  3. Step 3: Cross multiply
    6,872.42x = 9,483.99 × 3,728.63
  4. Step 4: Simplify right side
    6,872.42x = 35,362,289.63
  5. Step 5: Solve for x
    x = 35,362,289.63/6,872.42
  6. Step 6: Final answer
    x = 5,145.54

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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.