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Finding the Fourth Proportional to 3,887.70, 5,831.55 and 3,401.70

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Solution

The fourth proportional to 3,887.70, 5,831.55 and 3,401.70 is: 5,102.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.70 : 5,831.55 = 3,401.70 : x
  2. Step 2: Convert to fraction form
    3,887.70/5,831.55 = 3,401.70/x
  3. Step 3: Cross multiply
    3,887.70x = 5,831.55 × 3,401.70
  4. Step 4: Simplify right side
    3,887.70x = 19,837,183.64
  5. Step 5: Solve for x
    x = 19,837,183.64/3,887.70
  6. Step 6: Final answer
    x = 5,102.55

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Similar ratio
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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.