Home / 5,420.64-8,134.32-2,133.16

Finding the Fourth Proportional to 5,420.64, 8,134.32 and 2,133.16

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Solution

The fourth proportional to 5,420.64, 8,134.32 and 2,133.16 is: 3,201.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.64 : 8,134.32 = 2,133.16 : x
  2. Step 2: Convert to fraction form
    5,420.64/8,134.32 = 2,133.16/x
  3. Step 3: Cross multiply
    5,420.64x = 8,134.32 × 2,133.16
  4. Step 4: Simplify right side
    5,420.64x = 17,351,806.05
  5. Step 5: Solve for x
    x = 17,351,806.05/5,420.64
  6. Step 6: Final answer
    x = 3,201.06

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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.