Home / 3,991.36-5,986.32-2,832.40

Finding the Fourth Proportional to 3,991.36, 5,986.32 and 2,832.40

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Solution

The fourth proportional to 3,991.36, 5,986.32 and 2,832.40 is: 4,248.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.36 : 5,986.32 = 2,832.40 : x
  2. Step 2: Convert to fraction form
    3,991.36/5,986.32 = 2,832.40/x
  3. Step 3: Cross multiply
    3,991.36x = 5,986.32 × 2,832.40
  4. Step 4: Simplify right side
    3,991.36x = 16,955,652.77
  5. Step 5: Solve for x
    x = 16,955,652.77/3,991.36
  6. Step 6: Final answer
    x = 4,248.09

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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.