Home / 1,977.51-2,729.07-1,138.44

Finding the Fourth Proportional to 1,977.51, 2,729.07 and 1,138.44

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Solution

The fourth proportional to 1,977.51, 2,729.07 and 1,138.44 is: 1,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.51 : 2,729.07 = 1,138.44 : x
  2. Step 2: Convert to fraction form
    1,977.51/2,729.07 = 1,138.44/x
  3. Step 3: Cross multiply
    1,977.51x = 2,729.07 × 1,138.44
  4. Step 4: Simplify right side
    1,977.51x = 3,106,882.45
  5. Step 5: Solve for x
    x = 3,106,882.45/1,977.51
  6. Step 6: Final answer
    x = 1,571.11

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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.