Home / 3,619.60-5,429.40-3,581.20

Finding the Fourth Proportional to 3,619.60, 5,429.40 and 3,581.20

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Solution

The fourth proportional to 3,619.60, 5,429.40 and 3,581.20 is: 5,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.60 : 5,429.40 = 3,581.20 : x
  2. Step 2: Convert to fraction form
    3,619.60/5,429.40 = 3,581.20/x
  3. Step 3: Cross multiply
    3,619.60x = 5,429.40 × 3,581.20
  4. Step 4: Simplify right side
    3,619.60x = 19,443,767.28
  5. Step 5: Solve for x
    x = 19,443,767.28/3,619.60
  6. Step 6: Final answer
    x = 5,371.80

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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.