Home / 1,789.40-2,696.31-1,471.88

Finding the Fourth Proportional to 1,789.40, 2,696.31 and 1,471.88

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Solution

The fourth proportional to 1,789.40, 2,696.31 and 1,471.88 is: 2,217.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.40 : 2,696.31 = 1,471.88 : x
  2. Step 2: Convert to fraction form
    1,789.40/2,696.31 = 1,471.88/x
  3. Step 3: Cross multiply
    1,789.40x = 2,696.31 × 1,471.88
  4. Step 4: Simplify right side
    1,789.40x = 3,968,644.76
  5. Step 5: Solve for x
    x = 3,968,644.76/1,789.40
  6. Step 6: Final answer
    x = 2,217.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.