Home / 1,729.52-2,386.92-1,021.71

Finding the Fourth Proportional to 1,729.52, 2,386.92 and 1,021.71

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Solution

The fourth proportional to 1,729.52, 2,386.92 and 1,021.71 is: 1,410.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.52 : 2,386.92 = 1,021.71 : x
  2. Step 2: Convert to fraction form
    1,729.52/2,386.92 = 1,021.71/x
  3. Step 3: Cross multiply
    1,729.52x = 2,386.92 × 1,021.71
  4. Step 4: Simplify right side
    1,729.52x = 2,438,747.07
  5. Step 5: Solve for x
    x = 2,438,747.07/1,729.52
  6. Step 6: Final answer
    x = 1,410.07

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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.