Home / 2,877.67-3,971.39-1,618.77

Finding the Fourth Proportional to 2,877.67, 3,971.39 and 1,618.77

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Solution

The fourth proportional to 2,877.67, 3,971.39 and 1,618.77 is: 2,234.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.67 : 3,971.39 = 1,618.77 : x
  2. Step 2: Convert to fraction form
    2,877.67/3,971.39 = 1,618.77/x
  3. Step 3: Cross multiply
    2,877.67x = 3,971.39 × 1,618.77
  4. Step 4: Simplify right side
    2,877.67x = 6,428,766.99
  5. Step 5: Solve for x
    x = 6,428,766.99/2,877.67
  6. Step 6: Final answer
    x = 2,234.02

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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.