Home / 3,750.78-5,175.81-2,179.02

Finding the Fourth Proportional to 3,750.78, 5,175.81 and 2,179.02

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Solution

The fourth proportional to 3,750.78, 5,175.81 and 2,179.02 is: 3,006.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.78 : 5,175.81 = 2,179.02 : x
  2. Step 2: Convert to fraction form
    3,750.78/5,175.81 = 2,179.02/x
  3. Step 3: Cross multiply
    3,750.78x = 5,175.81 × 2,179.02
  4. Step 4: Simplify right side
    3,750.78x = 11,278,193.51
  5. Step 5: Solve for x
    x = 11,278,193.51/3,750.78
  6. Step 6: Final answer
    x = 3,006.89

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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.