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Finding the Fourth Proportional to 8,692.79, 13,040.21 and 2,767.60

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Solution

The fourth proportional to 8,692.79, 13,040.21 and 2,767.60 is: 4,151.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.79 : 13,040.21 = 2,767.60 : x
  2. Step 2: Convert to fraction form
    8,692.79/13,040.21 = 2,767.60/x
  3. Step 3: Cross multiply
    8,692.79x = 13,040.21 × 2,767.60
  4. Step 4: Simplify right side
    8,692.79x = 36,090,071.36
  5. Step 5: Solve for x
    x = 36,090,071.36/8,692.79
  6. Step 6: Final answer
    x = 4,151.72

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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.