Home / 8,106.81-12,143.79-6,251.49

Finding the Fourth Proportional to 8,106.81, 12,143.79 and 6,251.49

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Solution

The fourth proportional to 8,106.81, 12,143.79 and 6,251.49 is: 9,364.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,106.81 : 12,143.79 = 6,251.49 : x
  2. Step 2: Convert to fraction form
    8,106.81/12,143.79 = 6,251.49/x
  3. Step 3: Cross multiply
    8,106.81x = 12,143.79 × 6,251.49
  4. Step 4: Simplify right side
    8,106.81x = 75,916,781.75
  5. Step 5: Solve for x
    x = 75,916,781.75/8,106.81
  6. Step 6: Final answer
    x = 9,364.57

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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.