Home / 2,577.72-3,859.66-2,121.02

Finding the Fourth Proportional to 2,577.72, 3,859.66 and 2,121.02

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Solution

The fourth proportional to 2,577.72, 3,859.66 and 2,121.02 is: 3,175.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.72 : 3,859.66 = 2,121.02 : x
  2. Step 2: Convert to fraction form
    2,577.72/3,859.66 = 2,121.02/x
  3. Step 3: Cross multiply
    2,577.72x = 3,859.66 × 2,121.02
  4. Step 4: Simplify right side
    2,577.72x = 8,186,416.05
  5. Step 5: Solve for x
    x = 8,186,416.05/2,577.72
  6. Step 6: Final answer
    x = 3,175.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.