Home / 3,811.67-5,717.51-1,618.87

Finding the Fourth Proportional to 3,811.67, 5,717.51 and 1,618.87

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Solution

The fourth proportional to 3,811.67, 5,717.51 and 1,618.87 is: 2,428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.67 : 5,717.51 = 1,618.87 : x
  2. Step 2: Convert to fraction form
    3,811.67/5,717.51 = 1,618.87/x
  3. Step 3: Cross multiply
    3,811.67x = 5,717.51 × 1,618.87
  4. Step 4: Simplify right side
    3,811.67x = 9,255,895.17
  5. Step 5: Solve for x
    x = 9,255,895.17/3,811.67
  6. Step 6: Final answer
    x = 2,428.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.