Home / 3,430.22-5,145.30-1,238.94

Finding the Fourth Proportional to 3,430.22, 5,145.30 and 1,238.94

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Solution

The fourth proportional to 3,430.22, 5,145.30 and 1,238.94 is: 1,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.22 : 5,145.30 = 1,238.94 : x
  2. Step 2: Convert to fraction form
    3,430.22/5,145.30 = 1,238.94/x
  3. Step 3: Cross multiply
    3,430.22x = 5,145.30 × 1,238.94
  4. Step 4: Simplify right side
    3,430.22x = 6,374,717.98
  5. Step 5: Solve for x
    x = 6,374,717.98/3,430.22
  6. Step 6: Final answer
    x = 1,858.40

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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.