Home / 2,921.67-4,033.07-1,977

Finding the Fourth Proportional to 2,921.67, 4,033.07 and 1,977

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Solution

The fourth proportional to 2,921.67, 4,033.07 and 1,977 is: 2,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.67 : 4,033.07 = 1,977 : x
  2. Step 2: Convert to fraction form
    2,921.67/4,033.07 = 1,977/x
  3. Step 3: Cross multiply
    2,921.67x = 4,033.07 × 1,977
  4. Step 4: Simplify right side
    2,921.67x = 7,973,369.51
  5. Step 5: Solve for x
    x = 7,973,369.51/2,921.67
  6. Step 6: Final answer
    x = 2,729.05

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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.