Home / 3,720.81-5,133.90-2,228.49

Finding the Fourth Proportional to 3,720.81, 5,133.90 and 2,228.49

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Solution

The fourth proportional to 3,720.81, 5,133.90 and 2,228.49 is: 3,074.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.81 : 5,133.90 = 2,228.49 : x
  2. Step 2: Convert to fraction form
    3,720.81/5,133.90 = 2,228.49/x
  3. Step 3: Cross multiply
    3,720.81x = 5,133.90 × 2,228.49
  4. Step 4: Simplify right side
    3,720.81x = 11,440,844.81
  5. Step 5: Solve for x
    x = 11,440,844.81/3,720.81
  6. Step 6: Final answer
    x = 3,074.83

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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.