Home / 2,678.29-4,016.72-1,217.12

Finding the Fourth Proportional to 2,678.29, 4,016.72 and 1,217.12

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Solution

The fourth proportional to 2,678.29, 4,016.72 and 1,217.12 is: 1,825.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.29 : 4,016.72 = 1,217.12 : x
  2. Step 2: Convert to fraction form
    2,678.29/4,016.72 = 1,217.12/x
  3. Step 3: Cross multiply
    2,678.29x = 4,016.72 × 1,217.12
  4. Step 4: Simplify right side
    2,678.29x = 4,888,813.21
  5. Step 5: Solve for x
    x = 4,888,813.21/2,678.29
  6. Step 6: Final answer
    x = 1,825.35

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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.