Home / 3,817.88-5,269.10-2,139.36

Finding the Fourth Proportional to 3,817.88, 5,269.10 and 2,139.36

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Solution

The fourth proportional to 3,817.88, 5,269.10 and 2,139.36 is: 2,952.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,817.88 : 5,269.10 = 2,139.36 : x
  2. Step 2: Convert to fraction form
    3,817.88/5,269.10 = 2,139.36/x
  3. Step 3: Cross multiply
    3,817.88x = 5,269.10 × 2,139.36
  4. Step 4: Simplify right side
    3,817.88x = 11,272,491.08
  5. Step 5: Solve for x
    x = 11,272,491.08/3,817.88
  6. Step 6: Final answer
    x = 2,952.55

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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.