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Finding the Fourth Proportional to 8,762.87, 13,135.19 and 3,831.59

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Solution

The fourth proportional to 8,762.87, 13,135.19 and 3,831.59 is: 5,743.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.87 : 13,135.19 = 3,831.59 : x
  2. Step 2: Convert to fraction form
    8,762.87/13,135.19 = 3,831.59/x
  3. Step 3: Cross multiply
    8,762.87x = 13,135.19 × 3,831.59
  4. Step 4: Simplify right side
    8,762.87x = 50,328,577.82
  5. Step 5: Solve for x
    x = 50,328,577.82/8,762.87
  6. Step 6: Final answer
    x = 5,743.39

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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.