Home / 3,723.91-5,138.79-2,130.59

Finding the Fourth Proportional to 3,723.91, 5,138.79 and 2,130.59

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Solution

The fourth proportional to 3,723.91, 5,138.79 and 2,130.59 is: 2,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.91 : 5,138.79 = 2,130.59 : x
  2. Step 2: Convert to fraction form
    3,723.91/5,138.79 = 2,130.59/x
  3. Step 3: Cross multiply
    3,723.91x = 5,138.79 × 2,130.59
  4. Step 4: Simplify right side
    3,723.91x = 10,948,642.52
  5. Step 5: Solve for x
    x = 10,948,642.52/3,723.91
  6. Step 6: Final answer
    x = 2,940.10

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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.