Home / 3,430.26-5,145.38-1,238.99

Finding the Fourth Proportional to 3,430.26, 5,145.38 and 1,238.99

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Solution

The fourth proportional to 3,430.26, 5,145.38 and 1,238.99 is: 1,858.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.26 : 5,145.38 = 1,238.99 : x
  2. Step 2: Convert to fraction form
    3,430.26/5,145.38 = 1,238.99/x
  3. Step 3: Cross multiply
    3,430.26x = 5,145.38 × 1,238.99
  4. Step 4: Simplify right side
    3,430.26x = 6,375,047.09
  5. Step 5: Solve for x
    x = 6,375,047.09/3,430.26
  6. Step 6: Final answer
    x = 1,858.47

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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.