Home / 8,317.97-12,473.30-3,120.20

Finding the Fourth Proportional to 8,317.97, 12,473.30 and 3,120.20

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Solution

The fourth proportional to 8,317.97, 12,473.30 and 3,120.20 is: 4,678.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.97 : 12,473.30 = 3,120.20 : x
  2. Step 2: Convert to fraction form
    8,317.97/12,473.30 = 3,120.20/x
  3. Step 3: Cross multiply
    8,317.97x = 12,473.30 × 3,120.20
  4. Step 4: Simplify right side
    8,317.97x = 38,919,112.69
  5. Step 5: Solve for x
    x = 38,919,112.69/8,317.97
  6. Step 6: Final answer
    x = 4,678.92

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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.