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Finding the Fourth Proportional to 3,084.77, 4,627.46 and 863.61

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Solution

The fourth proportional to 3,084.77, 4,627.46 and 863.61 is: 1,295.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,084.77 : 4,627.46 = 863.61 : x
  2. Step 2: Convert to fraction form
    3,084.77/4,627.46 = 863.61/x
  3. Step 3: Cross multiply
    3,084.77x = 4,627.46 × 863.61
  4. Step 4: Simplify right side
    3,084.77x = 3,996,316.41
  5. Step 5: Solve for x
    x = 3,996,316.41/3,084.77
  6. Step 6: Final answer
    x = 1,295.50

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1.5x scale

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.