Home / 2,262.21-3,122.82-1,378.32

Finding the Fourth Proportional to 2,262.21, 3,122.82 and 1,378.32

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Solution

The fourth proportional to 2,262.21, 3,122.82 and 1,378.32 is: 1,902.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,262.21 : 3,122.82 = 1,378.32 : x
  2. Step 2: Convert to fraction form
    2,262.21/3,122.82 = 1,378.32/x
  3. Step 3: Cross multiply
    2,262.21x = 3,122.82 × 1,378.32
  4. Step 4: Simplify right side
    2,262.21x = 4,304,245.26
  5. Step 5: Solve for x
    x = 4,304,245.26/2,262.21
  6. Step 6: Final answer
    x = 1,902.67

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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.