Home / 1,330.30-1,838.37-1,067.86

Finding the Fourth Proportional to 1,330.30, 1,838.37 and 1,067.86

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Solution

The fourth proportional to 1,330.30, 1,838.37 and 1,067.86 is: 1,475.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.30 : 1,838.37 = 1,067.86 : x
  2. Step 2: Convert to fraction form
    1,330.30/1,838.37 = 1,067.86/x
  3. Step 3: Cross multiply
    1,330.30x = 1,838.37 × 1,067.86
  4. Step 4: Simplify right side
    1,330.30x = 1,963,121.79
  5. Step 5: Solve for x
    x = 1,963,121.79/1,330.30
  6. Step 6: Final answer
    x = 1,475.70

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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.