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Finding the Fourth Proportional to 8,878.68, 13,315.86 and 4,198.50

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Solution

The fourth proportional to 8,878.68, 13,315.86 and 4,198.50 is: 6,296.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.68 : 13,315.86 = 4,198.50 : x
  2. Step 2: Convert to fraction form
    8,878.68/13,315.86 = 4,198.50/x
  3. Step 3: Cross multiply
    8,878.68x = 13,315.86 × 4,198.50
  4. Step 4: Simplify right side
    8,878.68x = 55,906,638.21
  5. Step 5: Solve for x
    x = 55,906,638.21/8,878.68
  6. Step 6: Final answer
    x = 6,296.73

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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.