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Finding the Fourth Proportional to 8,863.15, 13,294.75 and 8,321.87

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Solution

The fourth proportional to 8,863.15, 13,294.75 and 8,321.87 is: 12,482.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,863.15 : 13,294.75 = 8,321.87 : x
  2. Step 2: Convert to fraction form
    8,863.15/13,294.75 = 8,321.87/x
  3. Step 3: Cross multiply
    8,863.15x = 13,294.75 × 8,321.87
  4. Step 4: Simplify right side
    8,863.15x = 110,637,181.18
  5. Step 5: Solve for x
    x = 110,637,181.18/8,863.15
  6. Step 6: Final answer
    x = 12,482.83

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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.