Home / 3,749.89-5,175.48-2,178.90

Finding the Fourth Proportional to 3,749.89, 5,175.48 and 2,178.90

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Solution

The fourth proportional to 3,749.89, 5,175.48 and 2,178.90 is: 3,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.89 : 5,175.48 = 2,178.90 : x
  2. Step 2: Convert to fraction form
    3,749.89/5,175.48 = 2,178.90/x
  3. Step 3: Cross multiply
    3,749.89x = 5,175.48 × 2,178.90
  4. Step 4: Simplify right side
    3,749.89x = 11,276,853.37
  5. Step 5: Solve for x
    x = 11,276,853.37/3,749.89
  6. Step 6: Final answer
    x = 3,007.25

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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.