Home / 3,718.74-5,131.64-2,125.56

Finding the Fourth Proportional to 3,718.74, 5,131.64 and 2,125.56

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Solution

The fourth proportional to 3,718.74, 5,131.64 and 2,125.56 is: 2,933.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.74 : 5,131.64 = 2,125.56 : x
  2. Step 2: Convert to fraction form
    3,718.74/5,131.64 = 2,125.56/x
  3. Step 3: Cross multiply
    3,718.74x = 5,131.64 × 2,125.56
  4. Step 4: Simplify right side
    3,718.74x = 10,907,608.72
  5. Step 5: Solve for x
    x = 10,907,608.72/3,718.74
  6. Step 6: Final answer
    x = 2,933.15

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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.