Home / 2,877.95-3,971.27-1,618.80

Finding the Fourth Proportional to 2,877.95, 3,971.27 and 1,618.80

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Solution

The fourth proportional to 2,877.95, 3,971.27 and 1,618.80 is: 2,233.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.95 : 3,971.27 = 1,618.80 : x
  2. Step 2: Convert to fraction form
    2,877.95/3,971.27 = 1,618.80/x
  3. Step 3: Cross multiply
    2,877.95x = 3,971.27 × 1,618.80
  4. Step 4: Simplify right side
    2,877.95x = 6,428,691.88
  5. Step 5: Solve for x
    x = 6,428,691.88/2,877.95
  6. Step 6: Final answer
    x = 2,233.77

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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.