Home / 2,428.41-3,640.46-1,129.17

Finding the Fourth Proportional to 2,428.41, 3,640.46 and 1,129.17

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Solution

The fourth proportional to 2,428.41, 3,640.46 and 1,129.17 is: 1,692.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.41 : 3,640.46 = 1,129.17 : x
  2. Step 2: Convert to fraction form
    2,428.41/3,640.46 = 1,129.17/x
  3. Step 3: Cross multiply
    2,428.41x = 3,640.46 × 1,129.17
  4. Step 4: Simplify right side
    2,428.41x = 4,110,692.57
  5. Step 5: Solve for x
    x = 4,110,692.57/2,428.41
  6. Step 6: Final answer
    x = 1,692.75

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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.