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Finding the Fourth Proportional to 3,887.65, 5,831.37 and 965.92

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Solution

The fourth proportional to 3,887.65, 5,831.37 and 965.92 is: 1,448.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.65 : 5,831.37 = 965.92 : x
  2. Step 2: Convert to fraction form
    3,887.65/5,831.37 = 965.92/x
  3. Step 3: Cross multiply
    3,887.65x = 5,831.37 × 965.92
  4. Step 4: Simplify right side
    3,887.65x = 5,632,636.91
  5. Step 5: Solve for x
    x = 5,632,636.91/3,887.65
  6. Step 6: Final answer
    x = 1,448.85

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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.