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Finding the Fourth Proportional to 8,692.67, 13,038.60 and 3,494.90

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Solution

The fourth proportional to 8,692.67, 13,038.60 and 3,494.90 is: 5,242.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.67 : 13,038.60 = 3,494.90 : x
  2. Step 2: Convert to fraction form
    8,692.67/13,038.60 = 3,494.90/x
  3. Step 3: Cross multiply
    8,692.67x = 13,038.60 × 3,494.90
  4. Step 4: Simplify right side
    8,692.67x = 45,568,603.14
  5. Step 5: Solve for x
    x = 45,568,603.14/8,692.67
  6. Step 6: Final answer
    x = 5,242.19

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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.