Home / 5,538.21-7,642.44-3,147.87

Finding the Fourth Proportional to 5,538.21, 7,642.44 and 3,147.87

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Solution

The fourth proportional to 5,538.21, 7,642.44 and 3,147.87 is: 4,343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.21 : 7,642.44 = 3,147.87 : x
  2. Step 2: Convert to fraction form
    5,538.21/7,642.44 = 3,147.87/x
  3. Step 3: Cross multiply
    5,538.21x = 7,642.44 × 3,147.87
  4. Step 4: Simplify right side
    5,538.21x = 24,057,407.60
  5. Step 5: Solve for x
    x = 24,057,407.60/5,538.21
  6. Step 6: Final answer
    x = 4,343.90

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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.