Home / 3,447.09-5,169.85-981.86

Finding the Fourth Proportional to 3,447.09, 5,169.85 and 981.86

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Solution

The fourth proportional to 3,447.09, 5,169.85 and 981.86 is: 1,472.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.09 : 5,169.85 = 981.86 : x
  2. Step 2: Convert to fraction form
    3,447.09/5,169.85 = 981.86/x
  3. Step 3: Cross multiply
    3,447.09x = 5,169.85 × 981.86
  4. Step 4: Simplify right side
    3,447.09x = 5,076,040.62
  5. Step 5: Solve for x
    x = 5,076,040.62/3,447.09
  6. Step 6: Final answer
    x = 1,472.56

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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.