Home / 3,749.88-5,174.92-2,178.08

Finding the Fourth Proportional to 3,749.88, 5,174.92 and 2,178.08

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Solution

The fourth proportional to 3,749.88, 5,174.92 and 2,178.08 is: 3,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.88 : 5,174.92 = 2,178.08 : x
  2. Step 2: Convert to fraction form
    3,749.88/5,174.92 = 2,178.08/x
  3. Step 3: Cross multiply
    3,749.88x = 5,174.92 × 2,178.08
  4. Step 4: Simplify right side
    3,749.88x = 11,271,389.75
  5. Step 5: Solve for x
    x = 11,271,389.75/3,749.88
  6. Step 6: Final answer
    x = 3,005.80

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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.