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Finding the Fourth Proportional to 8,863.16, 12,224.94 and 7,619

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Solution

The fourth proportional to 8,863.16, 12,224.94 and 7,619 is: 10,508.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,863.16 : 12,224.94 = 7,619 : x
  2. Step 2: Convert to fraction form
    8,863.16/12,224.94 = 7,619/x
  3. Step 3: Cross multiply
    8,863.16x = 12,224.94 × 7,619
  4. Step 4: Simplify right side
    8,863.16x = 93,141,817.86
  5. Step 5: Solve for x
    x = 93,141,817.86/8,863.16
  6. Step 6: Final answer
    x = 10,508.87

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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.