Home / 8,238.78-12,350.88-5,317.92

Finding the Fourth Proportional to 8,238.78, 12,350.88 and 5,317.92

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Solution

The fourth proportional to 8,238.78, 12,350.88 and 5,317.92 is: 7,972.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,238.78 : 12,350.88 = 5,317.92 : x
  2. Step 2: Convert to fraction form
    8,238.78/12,350.88 = 5,317.92/x
  3. Step 3: Cross multiply
    8,238.78x = 12,350.88 × 5,317.92
  4. Step 4: Simplify right side
    8,238.78x = 65,680,991.77
  5. Step 5: Solve for x
    x = 65,680,991.77/8,238.78
  6. Step 6: Final answer
    x = 7,972.17

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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.