Home / 8,515.05-12,772.42-3,831.74

Finding the Fourth Proportional to 8,515.05, 12,772.42 and 3,831.74

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Solution

The fourth proportional to 8,515.05, 12,772.42 and 3,831.74 is: 5,747.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.05 : 12,772.42 = 3,831.74 : x
  2. Step 2: Convert to fraction form
    8,515.05/12,772.42 = 3,831.74/x
  3. Step 3: Cross multiply
    8,515.05x = 12,772.42 × 3,831.74
  4. Step 4: Simplify right side
    8,515.05x = 48,940,636.52
  5. Step 5: Solve for x
    x = 48,940,636.52/8,515.05
  6. Step 6: Final answer
    x = 5,747.55

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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.