Home / 5,431.92-8,141.36-2,800.68

Finding the Fourth Proportional to 5,431.92, 8,141.36 and 2,800.68

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Solution

The fourth proportional to 5,431.92, 8,141.36 and 2,800.68 is: 4,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.92 : 8,141.36 = 2,800.68 : x
  2. Step 2: Convert to fraction form
    5,431.92/8,141.36 = 2,800.68/x
  3. Step 3: Cross multiply
    5,431.92x = 8,141.36 × 2,800.68
  4. Step 4: Simplify right side
    5,431.92x = 22,801,344.12
  5. Step 5: Solve for x
    x = 22,801,344.12/5,431.92
  6. Step 6: Final answer
    x = 4,197.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.