Home / 5,395-8,089.80-2,619.94

Finding the Fourth Proportional to 5,395, 8,089.80 and 2,619.94

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Solution

The fourth proportional to 5,395, 8,089.80 and 2,619.94 is: 3,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,395 : 8,089.80 = 2,619.94 : x
  2. Step 2: Convert to fraction form
    5,395/8,089.80 = 2,619.94/x
  3. Step 3: Cross multiply
    5,395x = 8,089.80 × 2,619.94
  4. Step 4: Simplify right side
    5,395x = 21,194,790.61
  5. Step 5: Solve for x
    x = 21,194,790.61/5,395
  6. Step 6: Final answer
    x = 3,928.60

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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.