Home / 3,811.30-5,259.63-2,218.03

Finding the Fourth Proportional to 3,811.30, 5,259.63 and 2,218.03

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Solution

The fourth proportional to 3,811.30, 5,259.63 and 2,218.03 is: 3,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.30 : 5,259.63 = 2,218.03 : x
  2. Step 2: Convert to fraction form
    3,811.30/5,259.63 = 2,218.03/x
  3. Step 3: Cross multiply
    3,811.30x = 5,259.63 × 2,218.03
  4. Step 4: Simplify right side
    3,811.30x = 11,666,017.13
  5. Step 5: Solve for x
    x = 11,666,017.13/3,811.30
  6. Step 6: Final answer
    x = 3,060.90

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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.