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Finding the Fourth Proportional to 2,245.76, 3,360.64 and 2,169.60

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Solution

The fourth proportional to 2,245.76, 3,360.64 and 2,169.60 is: 3,246.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.76 : 3,360.64 = 2,169.60 : x
  2. Step 2: Convert to fraction form
    2,245.76/3,360.64 = 2,169.60/x
  3. Step 3: Cross multiply
    2,245.76x = 3,360.64 × 2,169.60
  4. Step 4: Simplify right side
    2,245.76x = 7,291,244.54
  5. Step 5: Solve for x
    x = 7,291,244.54/2,245.76
  6. Step 6: Final answer
    x = 3,246.67

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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.