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Finding the Fourth Proportional to 8,863.50, 12,231.63 and 5,551.50

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Solution

The fourth proportional to 8,863.50, 12,231.63 and 5,551.50 is: 7,661.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,863.50 : 12,231.63 = 5,551.50 : x
  2. Step 2: Convert to fraction form
    8,863.50/12,231.63 = 5,551.50/x
  3. Step 3: Cross multiply
    8,863.50x = 12,231.63 × 5,551.50
  4. Step 4: Simplify right side
    8,863.50x = 67,903,893.95
  5. Step 5: Solve for x
    x = 67,903,893.95/8,863.50
  6. Step 6: Final answer
    x = 7,661.07

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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.