Home / 5,538.25-7,642.79-3,180.55

Finding the Fourth Proportional to 5,538.25, 7,642.79 and 3,180.55

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Solution

The fourth proportional to 5,538.25, 7,642.79 and 3,180.55 is: 4,389.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.25 : 7,642.79 = 3,180.55 : x
  2. Step 2: Convert to fraction form
    5,538.25/7,642.79 = 3,180.55/x
  3. Step 3: Cross multiply
    5,538.25x = 7,642.79 × 3,180.55
  4. Step 4: Simplify right side
    5,538.25x = 24,308,221.62
  5. Step 5: Solve for x
    x = 24,308,221.62/5,538.25
  6. Step 6: Final answer
    x = 4,389.15

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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.