Home / 1,868.99-2,579.33-1,238.43

Finding the Fourth Proportional to 1,868.99, 2,579.33 and 1,238.43

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Solution

The fourth proportional to 1,868.99, 2,579.33 and 1,238.43 is: 1,709.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.99 : 2,579.33 = 1,238.43 : x
  2. Step 2: Convert to fraction form
    1,868.99/2,579.33 = 1,238.43/x
  3. Step 3: Cross multiply
    1,868.99x = 2,579.33 × 1,238.43
  4. Step 4: Simplify right side
    1,868.99x = 3,194,319.65
  5. Step 5: Solve for x
    x = 3,194,319.65/1,868.99
  6. Step 6: Final answer
    x = 1,709.12

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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.