Home / 3,387.67-5,083.91-2,155.99

Finding the Fourth Proportional to 3,387.67, 5,083.91 and 2,155.99

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Solution

The fourth proportional to 3,387.67, 5,083.91 and 2,155.99 is: 3,235.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.67 : 5,083.91 = 2,155.99 : x
  2. Step 2: Convert to fraction form
    3,387.67/5,083.91 = 2,155.99/x
  3. Step 3: Cross multiply
    3,387.67x = 5,083.91 × 2,155.99
  4. Step 4: Simplify right side
    3,387.67x = 10,960,859.12
  5. Step 5: Solve for x
    x = 10,960,859.12/3,387.67
  6. Step 6: Final answer
    x = 3,235.52

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1.5x scale

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.