Home / 4,215.35-5,815.12-2,724.55

Finding the Fourth Proportional to 4,215.35, 5,815.12 and 2,724.55

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Solution

The fourth proportional to 4,215.35, 5,815.12 and 2,724.55 is: 3,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.35 : 5,815.12 = 2,724.55 : x
  2. Step 2: Convert to fraction form
    4,215.35/5,815.12 = 2,724.55/x
  3. Step 3: Cross multiply
    4,215.35x = 5,815.12 × 2,724.55
  4. Step 4: Simplify right side
    4,215.35x = 15,843,585.20
  5. Step 5: Solve for x
    x = 15,843,585.20/4,215.35
  6. Step 6: Final answer
    x = 3,758.55

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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.