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Finding the Fourth Proportional to 8,858.70, 13,289.27 and 3,928.23

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Solution

The fourth proportional to 8,858.70, 13,289.27 and 3,928.23 is: 5,892.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.70 : 13,289.27 = 3,928.23 : x
  2. Step 2: Convert to fraction form
    8,858.70/13,289.27 = 3,928.23/x
  3. Step 3: Cross multiply
    8,858.70x = 13,289.27 × 3,928.23
  4. Step 4: Simplify right side
    8,858.70x = 52,203,309.09
  5. Step 5: Solve for x
    x = 52,203,309.09/8,858.70
  6. Step 6: Final answer
    x = 5,892.89

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1.5x scale

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.