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Finding the Fourth Proportional to 5,912.60, 8,866.80 and 2,619.80

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Solution

The fourth proportional to 5,912.60, 8,866.80 and 2,619.80 is: 3,928.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,912.60 : 8,866.80 = 2,619.80 : x
  2. Step 2: Convert to fraction form
    5,912.60/8,866.80 = 2,619.80/x
  3. Step 3: Cross multiply
    5,912.60x = 8,866.80 × 2,619.80
  4. Step 4: Simplify right side
    5,912.60x = 23,229,242.64
  5. Step 5: Solve for x
    x = 23,229,242.64/5,912.60
  6. Step 6: Final answer
    x = 3,928.77

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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.