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Finding the Fourth Proportional to 6,872.56, 9,484.15 and 3,728.77

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Solution

The fourth proportional to 6,872.56, 9,484.15 and 3,728.77 is: 5,145.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.56 : 9,484.15 = 3,728.77 : x
  2. Step 2: Convert to fraction form
    6,872.56/9,484.15 = 3,728.77/x
  3. Step 3: Cross multiply
    6,872.56x = 9,484.15 × 3,728.77
  4. Step 4: Simplify right side
    6,872.56x = 35,364,214.00
  5. Step 5: Solve for x
    x = 35,364,214.00/6,872.56
  6. Step 6: Final answer
    x = 5,145.71

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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.