Home / 3,991.53-5,509.52-2,313.35

Finding the Fourth Proportional to 3,991.53, 5,509.52 and 2,313.35

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Solution

The fourth proportional to 3,991.53, 5,509.52 and 2,313.35 is: 3,193.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.53 : 5,509.52 = 2,313.35 : x
  2. Step 2: Convert to fraction form
    3,991.53/5,509.52 = 2,313.35/x
  3. Step 3: Cross multiply
    3,991.53x = 5,509.52 × 2,313.35
  4. Step 4: Simplify right side
    3,991.53x = 12,745,408.98
  5. Step 5: Solve for x
    x = 12,745,408.98/3,991.53
  6. Step 6: Final answer
    x = 3,193.11

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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.