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Finding the Fourth Proportional to 8,461, 12,692.08 and 2,616.84

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Solution

The fourth proportional to 8,461, 12,692.08 and 2,616.84 is: 3,925.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,461 : 12,692.08 = 2,616.84 : x
  2. Step 2: Convert to fraction form
    8,461/12,692.08 = 2,616.84/x
  3. Step 3: Cross multiply
    8,461x = 12,692.08 × 2,616.84
  4. Step 4: Simplify right side
    8,461x = 33,213,142.63
  5. Step 5: Solve for x
    x = 33,213,142.63/8,461
  6. Step 6: Final answer
    x = 3,925.44

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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.