Home / 3,745.40-5,618.80-1,280.92

Finding the Fourth Proportional to 3,745.40, 5,618.80 and 1,280.92

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Solution

The fourth proportional to 3,745.40, 5,618.80 and 1,280.92 is: 1,921.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.40 : 5,618.80 = 1,280.92 : x
  2. Step 2: Convert to fraction form
    3,745.40/5,618.80 = 1,280.92/x
  3. Step 3: Cross multiply
    3,745.40x = 5,618.80 × 1,280.92
  4. Step 4: Simplify right side
    3,745.40x = 7,197,233.30
  5. Step 5: Solve for x
    x = 7,197,233.30/3,745.40
  6. Step 6: Final answer
    x = 1,921.62

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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.