Home / 1,348.67-2,021.91-579.71

Finding the Fourth Proportional to 1,348.67, 2,021.91 and 579.71

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Solution

The fourth proportional to 1,348.67, 2,021.91 and 579.71 is: 869.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.67 : 2,021.91 = 579.71 : x
  2. Step 2: Convert to fraction form
    1,348.67/2,021.91 = 579.71/x
  3. Step 3: Cross multiply
    1,348.67x = 2,021.91 × 579.71
  4. Step 4: Simplify right side
    1,348.67x = 1,172,111.34
  5. Step 5: Solve for x
    x = 1,172,111.34/1,348.67
  6. Step 6: Final answer
    x = 869.09

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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.