Home / 2,855.80-4,284.24-1,211.32

Finding the Fourth Proportional to 2,855.80, 4,284.24 and 1,211.32

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Solution

The fourth proportional to 2,855.80, 4,284.24 and 1,211.32 is: 1,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.80 : 4,284.24 = 1,211.32 : x
  2. Step 2: Convert to fraction form
    2,855.80/4,284.24 = 1,211.32/x
  3. Step 3: Cross multiply
    2,855.80x = 4,284.24 × 1,211.32
  4. Step 4: Simplify right side
    2,855.80x = 5,189,585.60
  5. Step 5: Solve for x
    x = 5,189,585.60/2,855.80
  6. Step 6: Final answer
    x = 1,817.21

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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.