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Finding the Fourth Proportional to 4,379.69, 6,565.62 and 1,605.71

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Solution

The fourth proportional to 4,379.69, 6,565.62 and 1,605.71 is: 2,407.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,379.69 : 6,565.62 = 1,605.71 : x
  2. Step 2: Convert to fraction form
    4,379.69/6,565.62 = 1,605.71/x
  3. Step 3: Cross multiply
    4,379.69x = 6,565.62 × 1,605.71
  4. Step 4: Simplify right side
    4,379.69x = 10,542,481.14
  5. Step 5: Solve for x
    x = 10,542,481.14/4,379.69
  6. Step 6: Final answer
    x = 2,407.13

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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.