Home / 4,145.20-5,720.35-2,282.20

Finding the Fourth Proportional to 4,145.20, 5,720.35 and 2,282.20

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Solution

The fourth proportional to 4,145.20, 5,720.35 and 2,282.20 is: 3,149.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.20 : 5,720.35 = 2,282.20 : x
  2. Step 2: Convert to fraction form
    4,145.20/5,720.35 = 2,282.20/x
  3. Step 3: Cross multiply
    4,145.20x = 5,720.35 × 2,282.20
  4. Step 4: Simplify right side
    4,145.20x = 13,054,982.77
  5. Step 5: Solve for x
    x = 13,054,982.77/4,145.20
  6. Step 6: Final answer
    x = 3,149.42

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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.