Home / 3,430.96-5,145.99-1,209.28

Finding the Fourth Proportional to 3,430.96, 5,145.99 and 1,209.28

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Solution

The fourth proportional to 3,430.96, 5,145.99 and 1,209.28 is: 1,813.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.96 : 5,145.99 = 1,209.28 : x
  2. Step 2: Convert to fraction form
    3,430.96/5,145.99 = 1,209.28/x
  3. Step 3: Cross multiply
    3,430.96x = 5,145.99 × 1,209.28
  4. Step 4: Simplify right side
    3,430.96x = 6,222,942.79
  5. Step 5: Solve for x
    x = 6,222,942.79/3,430.96
  6. Step 6: Final answer
    x = 1,813.76

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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.