Home / 5,431.80-8,129.24-3,353.12

Finding the Fourth Proportional to 5,431.80, 8,129.24 and 3,353.12

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Solution

The fourth proportional to 5,431.80, 8,129.24 and 3,353.12 is: 5,018.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.80 : 8,129.24 = 3,353.12 : x
  2. Step 2: Convert to fraction form
    5,431.80/8,129.24 = 3,353.12/x
  3. Step 3: Cross multiply
    5,431.80x = 8,129.24 × 3,353.12
  4. Step 4: Simplify right side
    5,431.80x = 27,258,317.23
  5. Step 5: Solve for x
    x = 27,258,317.23/5,431.80
  6. Step 6: Final answer
    x = 5,018.28

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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.