Home / 1,993.32-2,750.94-1,247.40

Finding the Fourth Proportional to 1,993.32, 2,750.94 and 1,247.40

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Solution

The fourth proportional to 1,993.32, 2,750.94 and 1,247.40 is: 1,721.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.32 : 2,750.94 = 1,247.40 : x
  2. Step 2: Convert to fraction form
    1,993.32/2,750.94 = 1,247.40/x
  3. Step 3: Cross multiply
    1,993.32x = 2,750.94 × 1,247.40
  4. Step 4: Simplify right side
    1,993.32x = 3,431,522.56
  5. Step 5: Solve for x
    x = 3,431,522.56/1,993.32
  6. Step 6: Final answer
    x = 1,721.51

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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.