Home / 2,855.30-4,282.20-1,211.00

Finding the Fourth Proportional to 2,855.30, 4,282.20 and 1,211.00

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Solution

The fourth proportional to 2,855.30, 4,282.20 and 1,211.00 is: 1,816.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.30 : 4,282.20 = 1,211.00 : x
  2. Step 2: Convert to fraction form
    2,855.30/4,282.20 = 1,211.00/x
  3. Step 3: Cross multiply
    2,855.30x = 4,282.20 × 1,211.00
  4. Step 4: Simplify right side
    2,855.30x = 5,185,722.79
  5. Step 5: Solve for x
    x = 5,185,722.79/2,855.30
  6. Step 6: Final answer
    x = 1,816.18

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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.