Home / 1,717.73-2,370.47-931.78

Finding the Fourth Proportional to 1,717.73, 2,370.47 and 931.78

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Solution

The fourth proportional to 1,717.73, 2,370.47 and 931.78 is: 1,285.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.73 : 2,370.47 = 931.78 : x
  2. Step 2: Convert to fraction form
    1,717.73/2,370.47 = 931.78/x
  3. Step 3: Cross multiply
    1,717.73x = 2,370.47 × 931.78
  4. Step 4: Simplify right side
    1,717.73x = 2,208,758.33
  5. Step 5: Solve for x
    x = 2,208,758.33/1,717.73
  6. Step 6: Final answer
    x = 1,285.86

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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.