Home / 8,141.28-12,212.40-4,240.80

Finding the Fourth Proportional to 8,141.28, 12,212.40 and 4,240.80

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Solution

The fourth proportional to 8,141.28, 12,212.40 and 4,240.80 is: 6,361.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,141.28 : 12,212.40 = 4,240.80 : x
  2. Step 2: Convert to fraction form
    8,141.28/12,212.40 = 4,240.80/x
  3. Step 3: Cross multiply
    8,141.28x = 12,212.40 × 4,240.80
  4. Step 4: Simplify right side
    8,141.28x = 51,790,345.92
  5. Step 5: Solve for x
    x = 51,790,345.92/8,141.28
  6. Step 6: Final answer
    x = 6,361.45

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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.