Home / 3,738.65-5,160.12-2,145.56

Finding the Fourth Proportional to 3,738.65, 5,160.12 and 2,145.56

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Solution

The fourth proportional to 3,738.65, 5,160.12 and 2,145.56 is: 2,961.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.65 : 5,160.12 = 2,145.56 : x
  2. Step 2: Convert to fraction form
    3,738.65/5,160.12 = 2,145.56/x
  3. Step 3: Cross multiply
    3,738.65x = 5,160.12 × 2,145.56
  4. Step 4: Simplify right side
    3,738.65x = 11,071,321.27
  5. Step 5: Solve for x
    x = 11,071,321.27/3,738.65
  6. Step 6: Final answer
    x = 2,961.32

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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.