Home / 2,772.24-3,825.96-2,072.40

Finding the Fourth Proportional to 2,772.24, 3,825.96 and 2,072.40

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Solution

The fourth proportional to 2,772.24, 3,825.96 and 2,072.40 is: 2,860.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.24 : 3,825.96 = 2,072.40 : x
  2. Step 2: Convert to fraction form
    2,772.24/3,825.96 = 2,072.40/x
  3. Step 3: Cross multiply
    2,772.24x = 3,825.96 × 2,072.40
  4. Step 4: Simplify right side
    2,772.24x = 7,928,919.50
  5. Step 5: Solve for x
    x = 7,928,919.50/2,772.24
  6. Step 6: Final answer
    x = 2,860.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.