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Finding the Fourth Proportional to 8,692.56, 13,009.68 and 5,907.78

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Solution

The fourth proportional to 8,692.56, 13,009.68 and 5,907.78 is: 8,841.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.56 : 13,009.68 = 5,907.78 : x
  2. Step 2: Convert to fraction form
    8,692.56/13,009.68 = 5,907.78/x
  3. Step 3: Cross multiply
    8,692.56x = 13,009.68 × 5,907.78
  4. Step 4: Simplify right side
    8,692.56x = 76,858,327.31
  5. Step 5: Solve for x
    x = 76,858,327.31/8,692.56
  6. Step 6: Final answer
    x = 8,841.85

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1.5x scale

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.