Home / 6,991.42-10,487.08-2,831.36

Finding the Fourth Proportional to 6,991.42, 10,487.08 and 2,831.36

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Solution

The fourth proportional to 6,991.42, 10,487.08 and 2,831.36 is: 4,247.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.42 : 10,487.08 = 2,831.36 : x
  2. Step 2: Convert to fraction form
    6,991.42/10,487.08 = 2,831.36/x
  3. Step 3: Cross multiply
    6,991.42x = 10,487.08 × 2,831.36
  4. Step 4: Simplify right side
    6,991.42x = 29,692,717.97
  5. Step 5: Solve for x
    x = 29,692,717.97/6,991.42
  6. Step 6: Final answer
    x = 4,247.02

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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.