Home / 3,745.29-5,618.94-1,280.13

Finding the Fourth Proportional to 3,745.29, 5,618.94 and 1,280.13

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Solution

The fourth proportional to 3,745.29, 5,618.94 and 1,280.13 is: 1,920.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.29 : 5,618.94 = 1,280.13 : x
  2. Step 2: Convert to fraction form
    3,745.29/5,618.94 = 1,280.13/x
  3. Step 3: Cross multiply
    3,745.29x = 5,618.94 × 1,280.13
  4. Step 4: Simplify right side
    3,745.29x = 7,192,973.66
  5. Step 5: Solve for x
    x = 7,192,973.66/3,745.29
  6. Step 6: Final answer
    x = 1,920.54

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1.5x scale

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.