Home / 1,353.45-2,028.95-702.21

Finding the Fourth Proportional to 1,353.45, 2,028.95 and 702.21

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Solution

The fourth proportional to 1,353.45, 2,028.95 and 702.21 is: 1,052.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.45 : 2,028.95 = 702.21 : x
  2. Step 2: Convert to fraction form
    1,353.45/2,028.95 = 702.21/x
  3. Step 3: Cross multiply
    1,353.45x = 2,028.95 × 702.21
  4. Step 4: Simplify right side
    1,353.45x = 1,424,745.47
  5. Step 5: Solve for x
    x = 1,424,745.47/1,353.45
  6. Step 6: Final answer
    x = 1,052.68

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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.