Home / 2,921.62-4,028.98-2,361.72

Finding the Fourth Proportional to 2,921.62, 4,028.98 and 2,361.72

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Solution

The fourth proportional to 2,921.62, 4,028.98 and 2,361.72 is: 3,256.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.62 : 4,028.98 = 2,361.72 : x
  2. Step 2: Convert to fraction form
    2,921.62/4,028.98 = 2,361.72/x
  3. Step 3: Cross multiply
    2,921.62x = 4,028.98 × 2,361.72
  4. Step 4: Simplify right side
    2,921.62x = 9,515,322.65
  5. Step 5: Solve for x
    x = 9,515,322.65/2,921.62
  6. Step 6: Final answer
    x = 3,256.87

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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.