Home / 1,717.39-2,575.31-621.76

Finding the Fourth Proportional to 1,717.39, 2,575.31 and 621.76

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Solution

The fourth proportional to 1,717.39, 2,575.31 and 621.76 is: 932.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.39 : 2,575.31 = 621.76 : x
  2. Step 2: Convert to fraction form
    1,717.39/2,575.31 = 621.76/x
  3. Step 3: Cross multiply
    1,717.39x = 2,575.31 × 621.76
  4. Step 4: Simplify right side
    1,717.39x = 1,601,211.87
  5. Step 5: Solve for x
    x = 1,601,211.87/1,717.39
  6. Step 6: Final answer
    x = 932.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.