Home / 3,618.95-5,422.17-1,976.64

Finding the Fourth Proportional to 3,618.95, 5,422.17 and 1,976.64

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Solution

The fourth proportional to 3,618.95, 5,422.17 and 1,976.64 is: 2,961.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.95 : 5,422.17 = 1,976.64 : x
  2. Step 2: Convert to fraction form
    3,618.95/5,422.17 = 1,976.64/x
  3. Step 3: Cross multiply
    3,618.95x = 5,422.17 × 1,976.64
  4. Step 4: Simplify right side
    3,618.95x = 10,717,665.19
  5. Step 5: Solve for x
    x = 10,717,665.19/3,618.95
  6. Step 6: Final answer
    x = 2,961.54

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1.5x scale

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.