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Finding the Fourth Proportional to 9,190.90, 13,786.80 and 4,816.90

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Solution

The fourth proportional to 9,190.90, 13,786.80 and 4,816.90 is: 7,225.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.90 : 13,786.80 = 4,816.90 : x
  2. Step 2: Convert to fraction form
    9,190.90/13,786.80 = 4,816.90/x
  3. Step 3: Cross multiply
    9,190.90x = 13,786.80 × 4,816.90
  4. Step 4: Simplify right side
    9,190.90x = 66,409,636.92
  5. Step 5: Solve for x
    x = 66,409,636.92/9,190.90
  6. Step 6: Final answer
    x = 7,225.59

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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.