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Finding the Fourth Proportional to 8,692.19, 13,038.09 and 2,118.41

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Solution

The fourth proportional to 8,692.19, 13,038.09 and 2,118.41 is: 3,177.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.19 : 13,038.09 = 2,118.41 : x
  2. Step 2: Convert to fraction form
    8,692.19/13,038.09 = 2,118.41/x
  3. Step 3: Cross multiply
    8,692.19x = 13,038.09 × 2,118.41
  4. Step 4: Simplify right side
    8,692.19x = 27,620,020.24
  5. Step 5: Solve for x
    x = 27,620,020.24/8,692.19
  6. Step 6: Final answer
    x = 3,177.57

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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.