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Finding the Fourth Proportional to 6,762.16, 10,143.20 and 1,831.79

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Solution

The fourth proportional to 6,762.16, 10,143.20 and 1,831.79 is: 2,747.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,762.16 : 10,143.20 = 1,831.79 : x
  2. Step 2: Convert to fraction form
    6,762.16/10,143.20 = 1,831.79/x
  3. Step 3: Cross multiply
    6,762.16x = 10,143.20 × 1,831.79
  4. Step 4: Simplify right side
    6,762.16x = 18,580,242.27
  5. Step 5: Solve for x
    x = 18,580,242.27/6,762.16
  6. Step 6: Final answer
    x = 2,747.68

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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.