Home / 8,138.91-12,210.26-3,208.17

Finding the Fourth Proportional to 8,138.91, 12,210.26 and 3,208.17

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Solution

The fourth proportional to 8,138.91, 12,210.26 and 3,208.17 is: 4,813.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.91 : 12,210.26 = 3,208.17 : x
  2. Step 2: Convert to fraction form
    8,138.91/12,210.26 = 3,208.17/x
  3. Step 3: Cross multiply
    8,138.91x = 12,210.26 × 3,208.17
  4. Step 4: Simplify right side
    8,138.91x = 39,172,589.82
  5. Step 5: Solve for x
    x = 39,172,589.82/8,138.91
  6. Step 6: Final answer
    x = 4,813.00

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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.