Home / 5,426.10-8,139-1,728.56

Finding the Fourth Proportional to 5,426.10, 8,139 and 1,728.56

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Solution

The fourth proportional to 5,426.10, 8,139 and 1,728.56 is: 2,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.10 : 8,139 = 1,728.56 : x
  2. Step 2: Convert to fraction form
    5,426.10/8,139 = 1,728.56/x
  3. Step 3: Cross multiply
    5,426.10x = 8,139 × 1,728.56
  4. Step 4: Simplify right side
    5,426.10x = 14,068,709.15
  5. Step 5: Solve for x
    x = 14,068,709.15/5,426.10
  6. Step 6: Final answer
    x = 2,592.78

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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.