Home / 2,100.44-2,899-1,392.30

Finding the Fourth Proportional to 2,100.44, 2,899 and 1,392.30

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Solution

The fourth proportional to 2,100.44, 2,899 and 1,392.30 is: 1,921.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100.44 : 2,899 = 1,392.30 : x
  2. Step 2: Convert to fraction form
    2,100.44/2,899 = 1,392.30/x
  3. Step 3: Cross multiply
    2,100.44x = 2,899 × 1,392.30
  4. Step 4: Simplify right side
    2,100.44x = 4,036,277.70
  5. Step 5: Solve for x
    x = 4,036,277.70/2,100.44
  6. Step 6: Final answer
    x = 1,921.63

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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.