Home / 5,538.20-7,643.76-3,181.88

Finding the Fourth Proportional to 5,538.20, 7,643.76 and 3,181.88

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Solution

The fourth proportional to 5,538.20, 7,643.76 and 3,181.88 is: 4,391.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.20 : 7,643.76 = 3,181.88 : x
  2. Step 2: Convert to fraction form
    5,538.20/7,643.76 = 3,181.88/x
  3. Step 3: Cross multiply
    5,538.20x = 7,643.76 × 3,181.88
  4. Step 4: Simplify right side
    5,538.20x = 24,321,527.07
  5. Step 5: Solve for x
    x = 24,321,527.07/5,538.20
  6. Step 6: Final answer
    x = 4,391.59

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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.