Home / 2,786.43-4,175.04-1,688.51

Finding the Fourth Proportional to 2,786.43, 4,175.04 and 1,688.51

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Solution

The fourth proportional to 2,786.43, 4,175.04 and 1,688.51 is: 2,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.43 : 4,175.04 = 1,688.51 : x
  2. Step 2: Convert to fraction form
    2,786.43/4,175.04 = 1,688.51/x
  3. Step 3: Cross multiply
    2,786.43x = 4,175.04 × 1,688.51
  4. Step 4: Simplify right side
    2,786.43x = 7,049,613.56
  5. Step 5: Solve for x
    x = 7,049,613.56/2,786.43
  6. Step 6: Final answer
    x = 2,529.98

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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.