Home / 3,749.90-5,174.56-2,156.47

Finding the Fourth Proportional to 3,749.90, 5,174.56 and 2,156.47

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Solution

The fourth proportional to 3,749.90, 5,174.56 and 2,156.47 is: 2,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.90 : 5,174.56 = 2,156.47 : x
  2. Step 2: Convert to fraction form
    3,749.90/5,174.56 = 2,156.47/x
  3. Step 3: Cross multiply
    3,749.90x = 5,174.56 × 2,156.47
  4. Step 4: Simplify right side
    3,749.90x = 11,158,778.01
  5. Step 5: Solve for x
    x = 11,158,778.01/3,749.90
  6. Step 6: Final answer
    x = 2,975.75

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1.5x scale

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.