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Finding the Fourth Proportional to 6,361.80, 8,787.46 and 4,887.86

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Solution

The fourth proportional to 6,361.80, 8,787.46 and 4,887.86 is: 6,751.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,361.80 : 8,787.46 = 4,887.86 : x
  2. Step 2: Convert to fraction form
    6,361.80/8,787.46 = 4,887.86/x
  3. Step 3: Cross multiply
    6,361.80x = 8,787.46 × 4,887.86
  4. Step 4: Simplify right side
    6,361.80x = 42,951,874.24
  5. Step 5: Solve for x
    x = 42,951,874.24/6,361.80
  6. Step 6: Final answer
    x = 6,751.53

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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.