Home / 3,782.01-5,218.40-2,209.80

Finding the Fourth Proportional to 3,782.01, 5,218.40 and 2,209.80

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Solution

The fourth proportional to 3,782.01, 5,218.40 and 2,209.80 is: 3,049.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,782.01 : 5,218.40 = 2,209.80 : x
  2. Step 2: Convert to fraction form
    3,782.01/5,218.40 = 2,209.80/x
  3. Step 3: Cross multiply
    3,782.01x = 5,218.40 × 2,209.80
  4. Step 4: Simplify right side
    3,782.01x = 11,531,583.18
  5. Step 5: Solve for x
    x = 11,531,583.18/3,782.01
  6. Step 6: Final answer
    x = 3,049.07

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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.