Home / 2,238.19-3,086.56-1,440.70

Finding the Fourth Proportional to 2,238.19, 3,086.56 and 1,440.70

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Solution

The fourth proportional to 2,238.19, 3,086.56 and 1,440.70 is: 1,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,238.19 : 3,086.56 = 1,440.70 : x
  2. Step 2: Convert to fraction form
    2,238.19/3,086.56 = 1,440.70/x
  3. Step 3: Cross multiply
    2,238.19x = 3,086.56 × 1,440.70
  4. Step 4: Simplify right side
    2,238.19x = 4,446,806.99
  5. Step 5: Solve for x
    x = 4,446,806.99/2,238.19
  6. Step 6: Final answer
    x = 1,986.79

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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.