Home / 3,723.48-5,138.55-2,151.47

Finding the Fourth Proportional to 3,723.48, 5,138.55 and 2,151.47

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Solution

The fourth proportional to 3,723.48, 5,138.55 and 2,151.47 is: 2,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.48 : 5,138.55 = 2,151.47 : x
  2. Step 2: Convert to fraction form
    3,723.48/5,138.55 = 2,151.47/x
  3. Step 3: Cross multiply
    3,723.48x = 5,138.55 × 2,151.47
  4. Step 4: Simplify right side
    3,723.48x = 11,055,410.48
  5. Step 5: Solve for x
    x = 11,055,410.48/3,723.48
  6. Step 6: Final answer
    x = 2,969.11

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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.