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Finding the Fourth Proportional to 9,168.45, 12,652.45 and 5,189.49

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Solution

The fourth proportional to 9,168.45, 12,652.45 and 5,189.49 is: 7,161.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,168.45 : 12,652.45 = 5,189.49 : x
  2. Step 2: Convert to fraction form
    9,168.45/12,652.45 = 5,189.49/x
  3. Step 3: Cross multiply
    9,168.45x = 12,652.45 × 5,189.49
  4. Step 4: Simplify right side
    9,168.45x = 65,659,762.75
  5. Step 5: Solve for x
    x = 65,659,762.75/9,168.45
  6. Step 6: Final answer
    x = 7,161.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.