Home / 2,890.43-3,989.24-1,898.58

Finding the Fourth Proportional to 2,890.43, 3,989.24 and 1,898.58

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Solution

The fourth proportional to 2,890.43, 3,989.24 and 1,898.58 is: 2,620.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.43 : 3,989.24 = 1,898.58 : x
  2. Step 2: Convert to fraction form
    2,890.43/3,989.24 = 1,898.58/x
  3. Step 3: Cross multiply
    2,890.43x = 3,989.24 × 1,898.58
  4. Step 4: Simplify right side
    2,890.43x = 7,573,891.28
  5. Step 5: Solve for x
    x = 7,573,891.28/2,890.43
  6. Step 6: Final answer
    x = 2,620.33

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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.