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Finding the Fourth Proportional to 6,762.15, 10,143.24 and 1,831.80

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Solution

The fourth proportional to 6,762.15, 10,143.24 and 1,831.80 is: 2,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,762.15 : 10,143.24 = 1,831.80 : x
  2. Step 2: Convert to fraction form
    6,762.15/10,143.24 = 1,831.80/x
  3. Step 3: Cross multiply
    6,762.15x = 10,143.24 × 1,831.80
  4. Step 4: Simplify right side
    6,762.15x = 18,580,387.03
  5. Step 5: Solve for x
    x = 18,580,387.03/6,762.15
  6. Step 6: Final answer
    x = 2,747.70

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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.