Home / 8,213.06-12,320.81-3,828.13

Finding the Fourth Proportional to 8,213.06, 12,320.81 and 3,828.13

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Solution

The fourth proportional to 8,213.06, 12,320.81 and 3,828.13 is: 5,742.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.06 : 12,320.81 = 3,828.13 : x
  2. Step 2: Convert to fraction form
    8,213.06/12,320.81 = 3,828.13/x
  3. Step 3: Cross multiply
    8,213.06x = 12,320.81 × 3,828.13
  4. Step 4: Simplify right side
    8,213.06x = 47,165,626.80
  5. Step 5: Solve for x
    x = 47,165,626.80/8,213.06
  6. Step 6: Final answer
    x = 5,742.76

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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.