Home / 5,420.43-8,125.79-1,956.87

Finding the Fourth Proportional to 5,420.43, 8,125.79 and 1,956.87

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Solution

The fourth proportional to 5,420.43, 8,125.79 and 1,956.87 is: 2,933.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.43 : 8,125.79 = 1,956.87 : x
  2. Step 2: Convert to fraction form
    5,420.43/8,125.79 = 1,956.87/x
  3. Step 3: Cross multiply
    5,420.43x = 8,125.79 × 1,956.87
  4. Step 4: Simplify right side
    5,420.43x = 15,901,104.89
  5. Step 5: Solve for x
    x = 15,901,104.89/5,420.43
  6. Step 6: Final answer
    x = 2,933.55

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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.