Home / 3,937.66-5,431.35-2,991.33

Finding the Fourth Proportional to 3,937.66, 5,431.35 and 2,991.33

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Solution

The fourth proportional to 3,937.66, 5,431.35 and 2,991.33 is: 4,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.66 : 5,431.35 = 2,991.33 : x
  2. Step 2: Convert to fraction form
    3,937.66/5,431.35 = 2,991.33/x
  3. Step 3: Cross multiply
    3,937.66x = 5,431.35 × 2,991.33
  4. Step 4: Simplify right side
    3,937.66x = 16,246,971.41
  5. Step 5: Solve for x
    x = 16,246,971.41/3,937.66
  6. Step 6: Final answer
    x = 4,126.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.