Home / 3,718.62-5,131.74-2,125.61

Finding the Fourth Proportional to 3,718.62, 5,131.74 and 2,125.61

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Solution

The fourth proportional to 3,718.62, 5,131.74 and 2,125.61 is: 2,933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.62 : 5,131.74 = 2,125.61 : x
  2. Step 2: Convert to fraction form
    3,718.62/5,131.74 = 2,125.61/x
  3. Step 3: Cross multiply
    3,718.62x = 5,131.74 × 2,125.61
  4. Step 4: Simplify right side
    3,718.62x = 10,908,052.20
  5. Step 5: Solve for x
    x = 10,908,052.20/3,718.62
  6. Step 6: Final answer
    x = 2,933.36

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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.