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Finding the Fourth Proportional to 8,692.97, 12,079.49 and 8,602.65

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Solution

The fourth proportional to 8,692.97, 12,079.49 and 8,602.65 is: 11,953.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.97 : 12,079.49 = 8,602.65 : x
  2. Step 2: Convert to fraction form
    8,692.97/12,079.49 = 8,602.65/x
  3. Step 3: Cross multiply
    8,692.97x = 12,079.49 × 8,602.65
  4. Step 4: Simplify right side
    8,692.97x = 103,915,581.64
  5. Step 5: Solve for x
    x = 103,915,581.64/8,692.97
  6. Step 6: Final answer
    x = 11,953.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.