Home / 5,421.39-7,481.36-3,031.37

Finding the Fourth Proportional to 5,421.39, 7,481.36 and 3,031.37

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Solution

The fourth proportional to 5,421.39, 7,481.36 and 3,031.37 is: 4,183.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.39 : 7,481.36 = 3,031.37 : x
  2. Step 2: Convert to fraction form
    5,421.39/7,481.36 = 3,031.37/x
  3. Step 3: Cross multiply
    5,421.39x = 7,481.36 × 3,031.37
  4. Step 4: Simplify right side
    5,421.39x = 22,678,770.26
  5. Step 5: Solve for x
    x = 22,678,770.26/5,421.39
  6. Step 6: Final answer
    x = 4,183.20

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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.