Home / 2,160.36-2,982.29-1,375.47

Finding the Fourth Proportional to 2,160.36, 2,982.29 and 1,375.47

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Solution

The fourth proportional to 2,160.36, 2,982.29 and 1,375.47 is: 1,898.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.36 : 2,982.29 = 1,375.47 : x
  2. Step 2: Convert to fraction form
    2,160.36/2,982.29 = 1,375.47/x
  3. Step 3: Cross multiply
    2,160.36x = 2,982.29 × 1,375.47
  4. Step 4: Simplify right side
    2,160.36x = 4,102,043.55
  5. Step 5: Solve for x
    x = 4,102,043.55/2,160.36
  6. Step 6: Final answer
    x = 1,898.78

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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.