Home / 3,908.03-5,393.21-2,139.63

Finding the Fourth Proportional to 3,908.03, 5,393.21 and 2,139.63

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Solution

The fourth proportional to 3,908.03, 5,393.21 and 2,139.63 is: 2,952.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.03 : 5,393.21 = 2,139.63 : x
  2. Step 2: Convert to fraction form
    3,908.03/5,393.21 = 2,139.63/x
  3. Step 3: Cross multiply
    3,908.03x = 5,393.21 × 2,139.63
  4. Step 4: Simplify right side
    3,908.03x = 11,539,442.99
  5. Step 5: Solve for x
    x = 11,539,442.99/3,908.03
  6. Step 6: Final answer
    x = 2,952.76

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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.