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Finding the Fourth Proportional to 9,180.60, 13,770.90 and 2,255.10

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Solution

The fourth proportional to 9,180.60, 13,770.90 and 2,255.10 is: 3,382.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,180.60 : 13,770.90 = 2,255.10 : x
  2. Step 2: Convert to fraction form
    9,180.60/13,770.90 = 2,255.10/x
  3. Step 3: Cross multiply
    9,180.60x = 13,770.90 × 2,255.10
  4. Step 4: Simplify right side
    9,180.60x = 31,054,756.59
  5. Step 5: Solve for x
    x = 31,054,756.59/9,180.60
  6. Step 6: Final answer
    x = 3,382.65

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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.