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Finding the Fourth Proportional to 8,692.88, 11,996.08 and 4,916.78

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Solution

The fourth proportional to 8,692.88, 11,996.08 and 4,916.78 is: 6,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.88 : 11,996.08 = 4,916.78 : x
  2. Step 2: Convert to fraction form
    8,692.88/11,996.08 = 4,916.78/x
  3. Step 3: Cross multiply
    8,692.88x = 11,996.08 × 4,916.78
  4. Step 4: Simplify right side
    8,692.88x = 58,982,086.22
  5. Step 5: Solve for x
    x = 58,982,086.22/8,692.88
  6. Step 6: Final answer
    x = 6,785.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.