Home / 4,215.44-5,815.60-2,620.95

Finding the Fourth Proportional to 4,215.44, 5,815.60 and 2,620.95

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Solution

The fourth proportional to 4,215.44, 5,815.60 and 2,620.95 is: 3,615.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.44 : 5,815.60 = 2,620.95 : x
  2. Step 2: Convert to fraction form
    4,215.44/5,815.60 = 2,620.95/x
  3. Step 3: Cross multiply
    4,215.44x = 5,815.60 × 2,620.95
  4. Step 4: Simplify right side
    4,215.44x = 15,242,396.82
  5. Step 5: Solve for x
    x = 15,242,396.82/4,215.44
  6. Step 6: Final answer
    x = 3,615.85

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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.