Home / 2,179.52-3,006.88-1,393.28

Finding the Fourth Proportional to 2,179.52, 3,006.88 and 1,393.28

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Solution

The fourth proportional to 2,179.52, 3,006.88 and 1,393.28 is: 1,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.52 : 3,006.88 = 1,393.28 : x
  2. Step 2: Convert to fraction form
    2,179.52/3,006.88 = 1,393.28/x
  3. Step 3: Cross multiply
    2,179.52x = 3,006.88 × 1,393.28
  4. Step 4: Simplify right side
    2,179.52x = 4,189,425.77
  5. Step 5: Solve for x
    x = 4,189,425.77/2,179.52
  6. Step 6: Final answer
    x = 1,922.18

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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.