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Finding the Fourth Proportional to 8,862.15, 13,293.25 and 8,320.87

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Solution

The fourth proportional to 8,862.15, 13,293.25 and 8,320.87 is: 12,481.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862.15 : 13,293.25 = 8,320.87 : x
  2. Step 2: Convert to fraction form
    8,862.15/13,293.25 = 8,320.87/x
  3. Step 3: Cross multiply
    8,862.15x = 13,293.25 × 8,320.87
  4. Step 4: Simplify right side
    8,862.15x = 110,611,405.13
  5. Step 5: Solve for x
    x = 110,611,405.13/8,862.15
  6. Step 6: Final answer
    x = 12,481.33

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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.