Home / 8,138.20-12,207.30-5,066.20

Finding the Fourth Proportional to 8,138.20, 12,207.30 and 5,066.20

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Solution

The fourth proportional to 8,138.20, 12,207.30 and 5,066.20 is: 7,599.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.20 : 12,207.30 = 5,066.20 : x
  2. Step 2: Convert to fraction form
    8,138.20/12,207.30 = 5,066.20/x
  3. Step 3: Cross multiply
    8,138.20x = 12,207.30 × 5,066.20
  4. Step 4: Simplify right side
    8,138.20x = 61,844,623.26
  5. Step 5: Solve for x
    x = 61,844,623.26/8,138.20
  6. Step 6: Final answer
    x = 7,599.30

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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.