Home / 5,421.90-7,481.87-3,031.69

Finding the Fourth Proportional to 5,421.90, 7,481.87 and 3,031.69

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Solution

The fourth proportional to 5,421.90, 7,481.87 and 3,031.69 is: 4,183.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.90 : 7,481.87 = 3,031.69 : x
  2. Step 2: Convert to fraction form
    5,421.90/7,481.87 = 3,031.69/x
  3. Step 3: Cross multiply
    5,421.90x = 7,481.87 × 3,031.69
  4. Step 4: Simplify right side
    5,421.90x = 22,682,674.61
  5. Step 5: Solve for x
    x = 22,682,674.61/5,421.90
  6. Step 6: Final answer
    x = 4,183.53

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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.