Home / 6,619.72-9,132.92-3,930.32

Finding the Fourth Proportional to 6,619.72, 9,132.92 and 3,930.32

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Solution

The fourth proportional to 6,619.72, 9,132.92 and 3,930.32 is: 5,422.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.72 : 9,132.92 = 3,930.32 : x
  2. Step 2: Convert to fraction form
    6,619.72/9,132.92 = 3,930.32/x
  3. Step 3: Cross multiply
    6,619.72x = 9,132.92 × 3,930.32
  4. Step 4: Simplify right side
    6,619.72x = 35,895,298.13
  5. Step 5: Solve for x
    x = 35,895,298.13/6,619.72
  6. Step 6: Final answer
    x = 5,422.48

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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.