Home / 1,394.14-2,081.07-1,330.96

Finding the Fourth Proportional to 1,394.14, 2,081.07 and 1,330.96

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Solution

The fourth proportional to 1,394.14, 2,081.07 and 1,330.96 is: 1,986.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.14 : 2,081.07 = 1,330.96 : x
  2. Step 2: Convert to fraction form
    1,394.14/2,081.07 = 1,330.96/x
  3. Step 3: Cross multiply
    1,394.14x = 2,081.07 × 1,330.96
  4. Step 4: Simplify right side
    1,394.14x = 2,769,820.93
  5. Step 5: Solve for x
    x = 2,769,820.93/1,394.14
  6. Step 6: Final answer
    x = 1,986.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.