Home / 6,619.78-9,135.17-3,635.55

Finding the Fourth Proportional to 6,619.78, 9,135.17 and 3,635.55

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Solution

The fourth proportional to 6,619.78, 9,135.17 and 3,635.55 is: 5,016.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.78 : 9,135.17 = 3,635.55 : x
  2. Step 2: Convert to fraction form
    6,619.78/9,135.17 = 3,635.55/x
  3. Step 3: Cross multiply
    6,619.78x = 9,135.17 × 3,635.55
  4. Step 4: Simplify right side
    6,619.78x = 33,211,319.10
  5. Step 5: Solve for x
    x = 33,211,319.10/6,619.78
  6. Step 6: Final answer
    x = 5,016.99

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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.