Home / 2,139.27-3,203.49-1,445.19

Finding the Fourth Proportional to 2,139.27, 3,203.49 and 1,445.19

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Solution

The fourth proportional to 2,139.27, 3,203.49 and 1,445.19 is: 2,164.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.27 : 3,203.49 = 1,445.19 : x
  2. Step 2: Convert to fraction form
    2,139.27/3,203.49 = 1,445.19/x
  3. Step 3: Cross multiply
    2,139.27x = 3,203.49 × 1,445.19
  4. Step 4: Simplify right side
    2,139.27x = 4,629,651.71
  5. Step 5: Solve for x
    x = 4,629,651.71/2,139.27
  6. Step 6: Final answer
    x = 2,164.13

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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.