Home / 5,421.40-7,481.66-3,031.29

Finding the Fourth Proportional to 5,421.40, 7,481.66 and 3,031.29

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Solution

The fourth proportional to 5,421.40, 7,481.66 and 3,031.29 is: 4,183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.40 : 7,481.66 = 3,031.29 : x
  2. Step 2: Convert to fraction form
    5,421.40/7,481.66 = 3,031.29/x
  3. Step 3: Cross multiply
    5,421.40x = 7,481.66 × 3,031.29
  4. Step 4: Simplify right side
    5,421.40x = 22,679,065.98
  5. Step 5: Solve for x
    x = 22,679,065.98/5,421.40
  6. Step 6: Final answer
    x = 4,183.25

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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.