Home / 5,420.52-8,131.32-1,958.04

Finding the Fourth Proportional to 5,420.52, 8,131.32 and 1,958.04

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Solution

The fourth proportional to 5,420.52, 8,131.32 and 1,958.04 is: 2,937.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.52 : 8,131.32 = 1,958.04 : x
  2. Step 2: Convert to fraction form
    5,420.52/8,131.32 = 1,958.04/x
  3. Step 3: Cross multiply
    5,420.52x = 8,131.32 × 1,958.04
  4. Step 4: Simplify right side
    5,420.52x = 15,921,449.81
  5. Step 5: Solve for x
    x = 15,921,449.81/5,420.52
  6. Step 6: Final answer
    x = 2,937.26

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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.