Home / 2,628.78-3,627.99-2,001.12

Finding the Fourth Proportional to 2,628.78, 3,627.99 and 2,001.12

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Solution

The fourth proportional to 2,628.78, 3,627.99 and 2,001.12 is: 2,761.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.78 : 3,627.99 = 2,001.12 : x
  2. Step 2: Convert to fraction form
    2,628.78/3,627.99 = 2,001.12/x
  3. Step 3: Cross multiply
    2,628.78x = 3,627.99 × 2,001.12
  4. Step 4: Simplify right side
    2,628.78x = 7,260,043.35
  5. Step 5: Solve for x
    x = 7,260,043.35/2,628.78
  6. Step 6: Final answer
    x = 2,761.75

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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.