Home / 3,908.34-5,393.50-2,139.98

Finding the Fourth Proportional to 3,908.34, 5,393.50 and 2,139.98

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Solution

The fourth proportional to 3,908.34, 5,393.50 and 2,139.98 is: 2,953.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.34 : 5,393.50 = 2,139.98 : x
  2. Step 2: Convert to fraction form
    3,908.34/5,393.50 = 2,139.98/x
  3. Step 3: Cross multiply
    3,908.34x = 5,393.50 × 2,139.98
  4. Step 4: Simplify right side
    3,908.34x = 11,541,982.13
  5. Step 5: Solve for x
    x = 11,541,982.13/3,908.34
  6. Step 6: Final answer
    x = 2,953.17

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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.