Home / 3,429.36-5,143.42-1,120.86

Finding the Fourth Proportional to 3,429.36, 5,143.42 and 1,120.86

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Solution

The fourth proportional to 3,429.36, 5,143.42 and 1,120.86 is: 1,681.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.36 : 5,143.42 = 1,120.86 : x
  2. Step 2: Convert to fraction form
    3,429.36/5,143.42 = 1,120.86/x
  3. Step 3: Cross multiply
    3,429.36x = 5,143.42 × 1,120.86
  4. Step 4: Simplify right side
    3,429.36x = 5,765,053.74
  5. Step 5: Solve for x
    x = 5,765,053.74/3,429.36
  6. Step 6: Final answer
    x = 1,681.09

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1.5x scale

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.