Home / 3,518.88-5,278.80-1,211.04

Finding the Fourth Proportional to 3,518.88, 5,278.80 and 1,211.04

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Solution

The fourth proportional to 3,518.88, 5,278.80 and 1,211.04 is: 1,816.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.88 : 5,278.80 = 1,211.04 : x
  2. Step 2: Convert to fraction form
    3,518.88/5,278.80 = 1,211.04/x
  3. Step 3: Cross multiply
    3,518.88x = 5,278.80 × 1,211.04
  4. Step 4: Simplify right side
    3,518.88x = 6,392,837.95
  5. Step 5: Solve for x
    x = 6,392,837.95/3,518.88
  6. Step 6: Final answer
    x = 1,816.73

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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.