Home / 3,389.72-5,087-2,002.20

Finding the Fourth Proportional to 3,389.72, 5,087 and 2,002.20

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Solution

The fourth proportional to 3,389.72, 5,087 and 2,002.20 is: 3,004.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.72 : 5,087 = 2,002.20 : x
  2. Step 2: Convert to fraction form
    3,389.72/5,087 = 2,002.20/x
  3. Step 3: Cross multiply
    3,389.72x = 5,087 × 2,002.20
  4. Step 4: Simplify right side
    3,389.72x = 10,185,191.40
  5. Step 5: Solve for x
    x = 10,185,191.40/3,389.72
  6. Step 6: Final answer
    x = 3,004.73

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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.