Home / 2,381.42-3,286.26-1,319.12

Finding the Fourth Proportional to 2,381.42, 3,286.26 and 1,319.12

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Solution

The fourth proportional to 2,381.42, 3,286.26 and 1,319.12 is: 1,820.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.42 : 3,286.26 = 1,319.12 : x
  2. Step 2: Convert to fraction form
    2,381.42/3,286.26 = 1,319.12/x
  3. Step 3: Cross multiply
    2,381.42x = 3,286.26 × 1,319.12
  4. Step 4: Simplify right side
    2,381.42x = 4,334,969.84
  5. Step 5: Solve for x
    x = 4,334,969.84/2,381.42
  6. Step 6: Final answer
    x = 1,820.33

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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.