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Finding the Fourth Proportional to 6,831.79, 10,191.07 and 6,630.37

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Solution

The fourth proportional to 6,831.79, 10,191.07 and 6,630.37 is: 9,890.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,831.79 : 10,191.07 = 6,630.37 : x
  2. Step 2: Convert to fraction form
    6,831.79/10,191.07 = 6,630.37/x
  3. Step 3: Cross multiply
    6,831.79x = 10,191.07 × 6,630.37
  4. Step 4: Simplify right side
    6,831.79x = 67,570,513.84
  5. Step 5: Solve for x
    x = 67,570,513.84/6,831.79
  6. Step 6: Final answer
    x = 9,890.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.