Home / 2,784.20-4,185.89-2,240.20

Finding the Fourth Proportional to 2,784.20, 4,185.89 and 2,240.20

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Solution

The fourth proportional to 2,784.20, 4,185.89 and 2,240.20 is: 3,368.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.20 : 4,185.89 = 2,240.20 : x
  2. Step 2: Convert to fraction form
    2,784.20/4,185.89 = 2,240.20/x
  3. Step 3: Cross multiply
    2,784.20x = 4,185.89 × 2,240.20
  4. Step 4: Simplify right side
    2,784.20x = 9,377,198.65
  5. Step 5: Solve for x
    x = 9,377,198.65/2,784.20
  6. Step 6: Final answer
    x = 3,368.00

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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.