Home / 1,327.82-1,831.68-885.15

Finding the Fourth Proportional to 1,327.82, 1,831.68 and 885.15

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Solution

The fourth proportional to 1,327.82, 1,831.68 and 885.15 is: 1,221.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.82 : 1,831.68 = 885.15 : x
  2. Step 2: Convert to fraction form
    1,327.82/1,831.68 = 885.15/x
  3. Step 3: Cross multiply
    1,327.82x = 1,831.68 × 885.15
  4. Step 4: Simplify right side
    1,327.82x = 1,621,311.55
  5. Step 5: Solve for x
    x = 1,621,311.55/1,327.82
  6. Step 6: Final answer
    x = 1,221.04

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1.5x scale

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.