Home / 3,738.61-5,160.07-2,145.51

Finding the Fourth Proportional to 3,738.61, 5,160.07 and 2,145.51

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Solution

The fourth proportional to 3,738.61, 5,160.07 and 2,145.51 is: 2,961.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.61 : 5,160.07 = 2,145.51 : x
  2. Step 2: Convert to fraction form
    3,738.61/5,160.07 = 2,145.51/x
  3. Step 3: Cross multiply
    3,738.61x = 5,160.07 × 2,145.51
  4. Step 4: Simplify right side
    3,738.61x = 11,070,989.93
  5. Step 5: Solve for x
    x = 11,070,989.93/3,738.61
  6. Step 6: Final answer
    x = 2,961.26

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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.