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Finding the Fourth Proportional to 3,887.60, 5,831.40 and 3,304.40

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Solution

The fourth proportional to 3,887.60, 5,831.40 and 3,304.40 is: 4,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.60 : 5,831.40 = 3,304.40 : x
  2. Step 2: Convert to fraction form
    3,887.60/5,831.40 = 3,304.40/x
  3. Step 3: Cross multiply
    3,887.60x = 5,831.40 × 3,304.40
  4. Step 4: Simplify right side
    3,887.60x = 19,269,278.16
  5. Step 5: Solve for x
    x = 19,269,278.16/3,887.60
  6. Step 6: Final answer
    x = 4,956.60

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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.