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Finding the Fourth Proportional to 3,056.56, 4,584.18 and 864.70

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Solution

The fourth proportional to 3,056.56, 4,584.18 and 864.70 is: 1,296.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,056.56 : 4,584.18 = 864.70 : x
  2. Step 2: Convert to fraction form
    3,056.56/4,584.18 = 864.70/x
  3. Step 3: Cross multiply
    3,056.56x = 4,584.18 × 864.70
  4. Step 4: Simplify right side
    3,056.56x = 3,963,940.45
  5. Step 5: Solve for x
    x = 3,963,940.45/3,056.56
  6. Step 6: Final answer
    x = 1,296.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.