Home / 5,421.24-8,160.37-4,138.68

Finding the Fourth Proportional to 5,421.24, 8,160.37 and 4,138.68

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Solution

The fourth proportional to 5,421.24, 8,160.37 and 4,138.68 is: 6,229.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.24 : 8,160.37 = 4,138.68 : x
  2. Step 2: Convert to fraction form
    5,421.24/8,160.37 = 4,138.68/x
  3. Step 3: Cross multiply
    5,421.24x = 8,160.37 × 4,138.68
  4. Step 4: Simplify right side
    5,421.24x = 33,773,160.11
  5. Step 5: Solve for x
    x = 33,773,160.11/5,421.24
  6. Step 6: Final answer
    x = 6,229.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.