Home / 3,873.60-5,811.36-2,721.60

Finding the Fourth Proportional to 3,873.60, 5,811.36 and 2,721.60

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Solution

The fourth proportional to 3,873.60, 5,811.36 and 2,721.60 is: 4,083.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.60 : 5,811.36 = 2,721.60 : x
  2. Step 2: Convert to fraction form
    3,873.60/5,811.36 = 2,721.60/x
  3. Step 3: Cross multiply
    3,873.60x = 5,811.36 × 2,721.60
  4. Step 4: Simplify right side
    3,873.60x = 15,816,197.38
  5. Step 5: Solve for x
    x = 15,816,197.38/3,873.60
  6. Step 6: Final answer
    x = 4,083.07

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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.