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Finding the Fourth Proportional to 2,379.12, 3,569.39 and 735.81

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Solution

The fourth proportional to 2,379.12, 3,569.39 and 735.81 is: 1,103.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.12 : 3,569.39 = 735.81 : x
  2. Step 2: Convert to fraction form
    2,379.12/3,569.39 = 735.81/x
  3. Step 3: Cross multiply
    2,379.12x = 3,569.39 × 735.81
  4. Step 4: Simplify right side
    2,379.12x = 2,626,392.86
  5. Step 5: Solve for x
    x = 2,626,392.86/2,379.12
  6. Step 6: Final answer
    x = 1,103.93

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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.