Home / 6,689.21-9,238.86-4,447.20

Finding the Fourth Proportional to 6,689.21, 9,238.86 and 4,447.20

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Solution

The fourth proportional to 6,689.21, 9,238.86 and 4,447.20 is: 6,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.21 : 9,238.86 = 4,447.20 : x
  2. Step 2: Convert to fraction form
    6,689.21/9,238.86 = 4,447.20/x
  3. Step 3: Cross multiply
    6,689.21x = 9,238.86 × 4,447.20
  4. Step 4: Simplify right side
    6,689.21x = 41,087,092.84
  5. Step 5: Solve for x
    x = 41,087,092.84/6,689.21
  6. Step 6: Final answer
    x = 6,142.30

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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.