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Finding the Fourth Proportional to 6,361.80, 8,783.61 and 3,972.71

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Solution

The fourth proportional to 6,361.80, 8,783.61 and 3,972.71 is: 5,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,361.80 : 8,783.61 = 3,972.71 : x
  2. Step 2: Convert to fraction form
    6,361.80/8,783.61 = 3,972.71/x
  3. Step 3: Cross multiply
    6,361.80x = 8,783.61 × 3,972.71
  4. Step 4: Simplify right side
    6,361.80x = 34,894,691.37
  5. Step 5: Solve for x
    x = 34,894,691.37/6,361.80
  6. Step 6: Final answer
    x = 5,485.03

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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.