Home / 1,331.36-1,995.82-1,222.02

Finding the Fourth Proportional to 1,331.36, 1,995.82 and 1,222.02

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Solution

The fourth proportional to 1,331.36, 1,995.82 and 1,222.02 is: 1,831.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.36 : 1,995.82 = 1,222.02 : x
  2. Step 2: Convert to fraction form
    1,331.36/1,995.82 = 1,222.02/x
  3. Step 3: Cross multiply
    1,331.36x = 1,995.82 × 1,222.02
  4. Step 4: Simplify right side
    1,331.36x = 2,438,931.96
  5. Step 5: Solve for x
    x = 2,438,931.96/1,331.36
  6. Step 6: Final answer
    x = 1,831.91

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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.