Home / 5,416.76-8,129.41-2,784.15

Finding the Fourth Proportional to 5,416.76, 8,129.41 and 2,784.15

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Solution

The fourth proportional to 5,416.76, 8,129.41 and 2,784.15 is: 4,178.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.76 : 8,129.41 = 2,784.15 : x
  2. Step 2: Convert to fraction form
    5,416.76/8,129.41 = 2,784.15/x
  3. Step 3: Cross multiply
    5,416.76x = 8,129.41 × 2,784.15
  4. Step 4: Simplify right side
    5,416.76x = 22,633,489.89
  5. Step 5: Solve for x
    x = 22,633,489.89/5,416.76
  6. Step 6: Final answer
    x = 4,178.42

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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.