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Finding the Fourth Proportional to 3,693.60, 5,546.80 and 2,605.60

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Solution

The fourth proportional to 3,693.60, 5,546.80 and 2,605.60 is: 3,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,693.60 : 5,546.80 = 2,605.60 : x
  2. Step 2: Convert to fraction form
    3,693.60/5,546.80 = 2,605.60/x
  3. Step 3: Cross multiply
    3,693.60x = 5,546.80 × 2,605.60
  4. Step 4: Simplify right side
    3,693.60x = 14,452,742.08
  5. Step 5: Solve for x
    x = 14,452,742.08/3,693.60
  6. Step 6: Final answer
    x = 3,912.91

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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.