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Finding the Fourth Proportional to 8,505.73, 11,737.90 and 4,728.78

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Solution

The fourth proportional to 8,505.73, 11,737.90 and 4,728.78 is: 6,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.73 : 11,737.90 = 4,728.78 : x
  2. Step 2: Convert to fraction form
    8,505.73/11,737.90 = 4,728.78/x
  3. Step 3: Cross multiply
    8,505.73x = 11,737.90 × 4,728.78
  4. Step 4: Simplify right side
    8,505.73x = 55,505,864.43
  5. Step 5: Solve for x
    x = 55,505,864.43/8,505.73
  6. Step 6: Final answer
    x = 6,525.70

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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.