Home / 7,994.20-11,988.96-3,831.88

Finding the Fourth Proportional to 7,994.20, 11,988.96 and 3,831.88

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Solution

The fourth proportional to 7,994.20, 11,988.96 and 3,831.88 is: 5,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994.20 : 11,988.96 = 3,831.88 : x
  2. Step 2: Convert to fraction form
    7,994.20/11,988.96 = 3,831.88/x
  3. Step 3: Cross multiply
    7,994.20x = 11,988.96 × 3,831.88
  4. Step 4: Simplify right side
    7,994.20x = 45,940,256.04
  5. Step 5: Solve for x
    x = 45,940,256.04/7,994.20
  6. Step 6: Final answer
    x = 5,746.70

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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.