Home / 3,781.53-5,218.40-2,102.99

Finding the Fourth Proportional to 3,781.53, 5,218.40 and 2,102.99

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Solution

The fourth proportional to 3,781.53, 5,218.40 and 2,102.99 is: 2,902.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.53 : 5,218.40 = 2,102.99 : x
  2. Step 2: Convert to fraction form
    3,781.53/5,218.40 = 2,102.99/x
  3. Step 3: Cross multiply
    3,781.53x = 5,218.40 × 2,102.99
  4. Step 4: Simplify right side
    3,781.53x = 10,974,206.41
  5. Step 5: Solve for x
    x = 10,974,206.41/3,781.53
  6. Step 6: Final answer
    x = 2,902.05

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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.