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Finding the Fourth Proportional to 9,885.92, 14,831.05 and 3,311.94

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Solution

The fourth proportional to 9,885.92, 14,831.05 and 3,311.94 is: 4,968.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.92 : 14,831.05 = 3,311.94 : x
  2. Step 2: Convert to fraction form
    9,885.92/14,831.05 = 3,311.94/x
  3. Step 3: Cross multiply
    9,885.92x = 14,831.05 × 3,311.94
  4. Step 4: Simplify right side
    9,885.92x = 49,119,517.86
  5. Step 5: Solve for x
    x = 49,119,517.86/9,885.92
  6. Step 6: Final answer
    x = 4,968.63

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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.