Home / 3,825.60-5,280.48-2,428.80

Finding the Fourth Proportional to 3,825.60, 5,280.48 and 2,428.80

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Solution

The fourth proportional to 3,825.60, 5,280.48 and 2,428.80 is: 3,352.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,825.60 : 5,280.48 = 2,428.80 : x
  2. Step 2: Convert to fraction form
    3,825.60/5,280.48 = 2,428.80/x
  3. Step 3: Cross multiply
    3,825.60x = 5,280.48 × 2,428.80
  4. Step 4: Simplify right side
    3,825.60x = 12,825,229.82
  5. Step 5: Solve for x
    x = 12,825,229.82/3,825.60
  6. Step 6: Final answer
    x = 3,352.48

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1.5x scale

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.