Home / 3,895.59-5,374.05-2,831.70

Finding the Fourth Proportional to 3,895.59, 5,374.05 and 2,831.70

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Solution

The fourth proportional to 3,895.59, 5,374.05 and 2,831.70 is: 3,906.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.59 : 5,374.05 = 2,831.70 : x
  2. Step 2: Convert to fraction form
    3,895.59/5,374.05 = 2,831.70/x
  3. Step 3: Cross multiply
    3,895.59x = 5,374.05 × 2,831.70
  4. Step 4: Simplify right side
    3,895.59x = 15,217,706.92
  5. Step 5: Solve for x
    x = 15,217,706.92/3,895.59
  6. Step 6: Final answer
    x = 3,906.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.