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Finding the Fourth Proportional to 8,330.70, 12,496.04 and 3,399.20

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Solution

The fourth proportional to 8,330.70, 12,496.04 and 3,399.20 is: 5,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,330.70 : 12,496.04 = 3,399.20 : x
  2. Step 2: Convert to fraction form
    8,330.70/12,496.04 = 3,399.20/x
  3. Step 3: Cross multiply
    8,330.70x = 12,496.04 × 3,399.20
  4. Step 4: Simplify right side
    8,330.70x = 42,476,539.17
  5. Step 5: Solve for x
    x = 42,476,539.17/8,330.70
  6. Step 6: Final answer
    x = 5,098.80

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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.