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Finding the Fourth Proportional to 4,379.80, 6,564.22 and 2,189.14

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Solution

The fourth proportional to 4,379.80, 6,564.22 and 2,189.14 is: 3,280.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,379.80 : 6,564.22 = 2,189.14 : x
  2. Step 2: Convert to fraction form
    4,379.80/6,564.22 = 2,189.14/x
  3. Step 3: Cross multiply
    4,379.80x = 6,564.22 × 2,189.14
  4. Step 4: Simplify right side
    4,379.80x = 14,369,996.57
  5. Step 5: Solve for x
    x = 14,369,996.57/4,379.80
  6. Step 6: Final answer
    x = 3,280.97

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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.