Home / 6,617.25-9,131.47-3,928.59

Finding the Fourth Proportional to 6,617.25, 9,131.47 and 3,928.59

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Solution

The fourth proportional to 6,617.25, 9,131.47 and 3,928.59 is: 5,421.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,617.25 : 9,131.47 = 3,928.59 : x
  2. Step 2: Convert to fraction form
    6,617.25/9,131.47 = 3,928.59/x
  3. Step 3: Cross multiply
    6,617.25x = 9,131.47 × 3,928.59
  4. Step 4: Simplify right side
    6,617.25x = 35,873,801.73
  5. Step 5: Solve for x
    x = 35,873,801.73/6,617.25
  6. Step 6: Final answer
    x = 5,421.26

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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.