Home / 1,942.06-2,910.30-1,211.20

Finding the Fourth Proportional to 1,942.06, 2,910.30 and 1,211.20

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Solution

The fourth proportional to 1,942.06, 2,910.30 and 1,211.20 is: 1,815.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.06 : 2,910.30 = 1,211.20 : x
  2. Step 2: Convert to fraction form
    1,942.06/2,910.30 = 1,211.20/x
  3. Step 3: Cross multiply
    1,942.06x = 2,910.30 × 1,211.20
  4. Step 4: Simplify right side
    1,942.06x = 3,524,955.36
  5. Step 5: Solve for x
    x = 3,524,955.36/1,942.06
  6. Step 6: Final answer
    x = 1,815.06

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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.