Home / 2,627.90-3,936.47-2,105.07

Finding the Fourth Proportional to 2,627.90, 3,936.47 and 2,105.07

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Solution

The fourth proportional to 2,627.90, 3,936.47 and 2,105.07 is: 3,153.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,627.90 : 3,936.47 = 2,105.07 : x
  2. Step 2: Convert to fraction form
    2,627.90/3,936.47 = 2,105.07/x
  3. Step 3: Cross multiply
    2,627.90x = 3,936.47 × 2,105.07
  4. Step 4: Simplify right side
    2,627.90x = 8,286,534.38
  5. Step 5: Solve for x
    x = 8,286,534.38/2,627.90
  6. Step 6: Final answer
    x = 3,153.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.