Home / 2,245.21-3,365.73-1,147.15

Finding the Fourth Proportional to 2,245.21, 3,365.73 and 1,147.15

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Solution

The fourth proportional to 2,245.21, 3,365.73 and 1,147.15 is: 1,719.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.21 : 3,365.73 = 1,147.15 : x
  2. Step 2: Convert to fraction form
    2,245.21/3,365.73 = 1,147.15/x
  3. Step 3: Cross multiply
    2,245.21x = 3,365.73 × 1,147.15
  4. Step 4: Simplify right side
    2,245.21x = 3,860,997.17
  5. Step 5: Solve for x
    x = 3,860,997.17/2,245.21
  6. Step 6: Final answer
    x = 1,719.66

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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.