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Finding the Fourth Proportional to 8,868.38, 13,284.83 and 7,684.76

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Solution

The fourth proportional to 8,868.38, 13,284.83 and 7,684.76 is: 11,511.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.38 : 13,284.83 = 7,684.76 : x
  2. Step 2: Convert to fraction form
    8,868.38/13,284.83 = 7,684.76/x
  3. Step 3: Cross multiply
    8,868.38x = 13,284.83 × 7,684.76
  4. Step 4: Simplify right side
    8,868.38x = 102,090,625.34
  5. Step 5: Solve for x
    x = 102,090,625.34/8,868.38
  6. Step 6: Final answer
    x = 11,511.76

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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.