Home / 1,327.75-1,831.30-1,119.07

Finding the Fourth Proportional to 1,327.75, 1,831.30 and 1,119.07

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Solution

The fourth proportional to 1,327.75, 1,831.30 and 1,119.07 is: 1,543.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.75 : 1,831.30 = 1,119.07 : x
  2. Step 2: Convert to fraction form
    1,327.75/1,831.30 = 1,119.07/x
  3. Step 3: Cross multiply
    1,327.75x = 1,831.30 × 1,119.07
  4. Step 4: Simplify right side
    1,327.75x = 2,049,352.89
  5. Step 5: Solve for x
    x = 2,049,352.89/1,327.75
  6. Step 6: Final answer
    x = 1,543.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.