Home / 2,813.03-4,219.61-865.25

Finding the Fourth Proportional to 2,813.03, 4,219.61 and 865.25

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Solution

The fourth proportional to 2,813.03, 4,219.61 and 865.25 is: 1,297.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.03 : 4,219.61 = 865.25 : x
  2. Step 2: Convert to fraction form
    2,813.03/4,219.61 = 865.25/x
  3. Step 3: Cross multiply
    2,813.03x = 4,219.61 × 865.25
  4. Step 4: Simplify right side
    2,813.03x = 3,651,019.72
  5. Step 5: Solve for x
    x = 3,651,019.72/2,813.03
  6. Step 6: Final answer
    x = 1,297.90

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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.