Home / 3,618.22-5,427.98-1,279.58

Finding the Fourth Proportional to 3,618.22, 5,427.98 and 1,279.58

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Solution

The fourth proportional to 3,618.22, 5,427.98 and 1,279.58 is: 1,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.22 : 5,427.98 = 1,279.58 : x
  2. Step 2: Convert to fraction form
    3,618.22/5,427.98 = 1,279.58/x
  3. Step 3: Cross multiply
    3,618.22x = 5,427.98 × 1,279.58
  4. Step 4: Simplify right side
    3,618.22x = 6,945,534.65
  5. Step 5: Solve for x
    x = 6,945,534.65/3,618.22
  6. Step 6: Final answer
    x = 1,919.60

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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.