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Finding the Fourth Proportional to 5,489.28, 8,238.71 and 4,865.99

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Solution

The fourth proportional to 5,489.28, 8,238.71 and 4,865.99 is: 7,303.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.28 : 8,238.71 = 4,865.99 : x
  2. Step 2: Convert to fraction form
    5,489.28/8,238.71 = 4,865.99/x
  3. Step 3: Cross multiply
    5,489.28x = 8,238.71 × 4,865.99
  4. Step 4: Simplify right side
    5,489.28x = 40,089,480.47
  5. Step 5: Solve for x
    x = 40,089,480.47/5,489.28
  6. Step 6: Final answer
    x = 7,303.23

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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.