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Finding the Fourth Proportional to 5,819.09, 8,692.11 and 5,720.68

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Solution

The fourth proportional to 5,819.09, 8,692.11 and 5,720.68 is: 8,545.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,819.09 : 8,692.11 = 5,720.68 : x
  2. Step 2: Convert to fraction form
    5,819.09/8,692.11 = 5,720.68/x
  3. Step 3: Cross multiply
    5,819.09x = 8,692.11 × 5,720.68
  4. Step 4: Simplify right side
    5,819.09x = 49,724,741.81
  5. Step 5: Solve for x
    x = 49,724,741.81/5,819.09
  6. Step 6: Final answer
    x = 8,545.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.