Home / 1,729.67-2,386.15-1,021.05

Finding the Fourth Proportional to 1,729.67, 2,386.15 and 1,021.05

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Solution

The fourth proportional to 1,729.67, 2,386.15 and 1,021.05 is: 1,408.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.67 : 2,386.15 = 1,021.05 : x
  2. Step 2: Convert to fraction form
    1,729.67/2,386.15 = 1,021.05/x
  3. Step 3: Cross multiply
    1,729.67x = 2,386.15 × 1,021.05
  4. Step 4: Simplify right side
    1,729.67x = 2,436,375.90
  5. Step 5: Solve for x
    x = 2,436,375.90/1,729.67
  6. Step 6: Final answer
    x = 1,408.58

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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.