Home / 2,440.70-3,367.86-1,378.38

Finding the Fourth Proportional to 2,440.70, 3,367.86 and 1,378.38

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Solution

The fourth proportional to 2,440.70, 3,367.86 and 1,378.38 is: 1,901.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,440.70 : 3,367.86 = 1,378.38 : x
  2. Step 2: Convert to fraction form
    2,440.70/3,367.86 = 1,378.38/x
  3. Step 3: Cross multiply
    2,440.70x = 3,367.86 × 1,378.38
  4. Step 4: Simplify right side
    2,440.70x = 4,642,190.87
  5. Step 5: Solve for x
    x = 4,642,190.87/2,440.70
  6. Step 6: Final answer
    x = 1,901.99

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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.