Home / 3,429.55-5,143.26-1,785.20

Finding the Fourth Proportional to 3,429.55, 5,143.26 and 1,785.20

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Solution

The fourth proportional to 3,429.55, 5,143.26 and 1,785.20 is: 2,677.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.55 : 5,143.26 = 1,785.20 : x
  2. Step 2: Convert to fraction form
    3,429.55/5,143.26 = 1,785.20/x
  3. Step 3: Cross multiply
    3,429.55x = 5,143.26 × 1,785.20
  4. Step 4: Simplify right side
    3,429.55x = 9,181,747.75
  5. Step 5: Solve for x
    x = 9,181,747.75/3,429.55
  6. Step 6: Final answer
    x = 2,677.25

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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.