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Finding the Fourth Proportional to 8,692.43, 13,039.65 and 3,148.39

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Solution

The fourth proportional to 8,692.43, 13,039.65 and 3,148.39 is: 4,722.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.43 : 13,039.65 = 3,148.39 : x
  2. Step 2: Convert to fraction form
    8,692.43/13,039.65 = 3,148.39/x
  3. Step 3: Cross multiply
    8,692.43x = 13,039.65 × 3,148.39
  4. Step 4: Simplify right side
    8,692.43x = 41,053,838.47
  5. Step 5: Solve for x
    x = 41,053,838.47/8,692.43
  6. Step 6: Final answer
    x = 4,722.94

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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.