Home / 2,786.29-4,172.80-1,613.82

Finding the Fourth Proportional to 2,786.29, 4,172.80 and 1,613.82

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Solution

The fourth proportional to 2,786.29, 4,172.80 and 1,613.82 is: 2,416.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.29 : 4,172.80 = 1,613.82 : x
  2. Step 2: Convert to fraction form
    2,786.29/4,172.80 = 1,613.82/x
  3. Step 3: Cross multiply
    2,786.29x = 4,172.80 × 1,613.82
  4. Step 4: Simplify right side
    2,786.29x = 6,734,148.10
  5. Step 5: Solve for x
    x = 6,734,148.10/2,786.29
  6. Step 6: Final answer
    x = 2,416.89

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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.