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Finding the Fourth Proportional to 3,887.48, 5,831.53 and 1,914.17

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Solution

The fourth proportional to 3,887.48, 5,831.53 and 1,914.17 is: 2,871.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.48 : 5,831.53 = 1,914.17 : x
  2. Step 2: Convert to fraction form
    3,887.48/5,831.53 = 1,914.17/x
  3. Step 3: Cross multiply
    3,887.48x = 5,831.53 × 1,914.17
  4. Step 4: Simplify right side
    3,887.48x = 11,162,539.78
  5. Step 5: Solve for x
    x = 11,162,539.78/3,887.48
  6. Step 6: Final answer
    x = 2,871.41

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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.