Home / 11,887.98-17,831.25-3,122.88

Finding the Fourth Proportional to 11,887.98, 17,831.25 and 3,122.88

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Solution

The fourth proportional to 11,887.98, 17,831.25 and 3,122.88 is: 4,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.98 : 17,831.25 = 3,122.88 : x
  2. Step 2: Convert to fraction form
    11,887.98/17,831.25 = 3,122.88/x
  3. Step 3: Cross multiply
    11,887.98x = 17,831.25 × 3,122.88
  4. Step 4: Simplify right side
    11,887.98x = 55,684,854
  5. Step 5: Solve for x
    x = 55,684,854/11,887.98
  6. Step 6: Final answer
    x = 4,684.13

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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.