Home / 2,139.30-3,203.48-1,895.09

Finding the Fourth Proportional to 2,139.30, 3,203.48 and 1,895.09

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Solution

The fourth proportional to 2,139.30, 3,203.48 and 1,895.09 is: 2,837.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.30 : 3,203.48 = 1,895.09 : x
  2. Step 2: Convert to fraction form
    2,139.30/3,203.48 = 1,895.09/x
  3. Step 3: Cross multiply
    2,139.30x = 3,203.48 × 1,895.09
  4. Step 4: Simplify right side
    2,139.30x = 6,070,871.63
  5. Step 5: Solve for x
    x = 6,070,871.63/2,139.30
  6. Step 6: Final answer
    x = 2,837.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.