Home / 8,431.82-11,629.44-6,448.94

Finding the Fourth Proportional to 8,431.82, 11,629.44 and 6,448.94

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Solution

The fourth proportional to 8,431.82, 11,629.44 and 6,448.94 is: 8,894.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.82 : 11,629.44 = 6,448.94 : x
  2. Step 2: Convert to fraction form
    8,431.82/11,629.44 = 6,448.94/x
  3. Step 3: Cross multiply
    8,431.82x = 11,629.44 × 6,448.94
  4. Step 4: Simplify right side
    8,431.82x = 74,997,560.79
  5. Step 5: Solve for x
    x = 74,997,560.79/8,431.82
  6. Step 6: Final answer
    x = 8,894.59

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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.