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Finding the Fourth Proportional to 8,692.08, 13,021.80 and 4,304.40

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Solution

The fourth proportional to 8,692.08, 13,021.80 and 4,304.40 is: 6,448.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.08 : 13,021.80 = 4,304.40 : x
  2. Step 2: Convert to fraction form
    8,692.08/13,021.80 = 4,304.40/x
  3. Step 3: Cross multiply
    8,692.08x = 13,021.80 × 4,304.40
  4. Step 4: Simplify right side
    8,692.08x = 56,051,035.92
  5. Step 5: Solve for x
    x = 56,051,035.92/8,692.08
  6. Step 6: Final answer
    x = 6,448.52

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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.