Home / 3,619.36-5,429.98-1,672.96

Finding the Fourth Proportional to 3,619.36, 5,429.98 and 1,672.96

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Solution

The fourth proportional to 3,619.36, 5,429.98 and 1,672.96 is: 2,509.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.36 : 5,429.98 = 1,672.96 : x
  2. Step 2: Convert to fraction form
    3,619.36/5,429.98 = 1,672.96/x
  3. Step 3: Cross multiply
    3,619.36x = 5,429.98 × 1,672.96
  4. Step 4: Simplify right side
    3,619.36x = 9,084,139.34
  5. Step 5: Solve for x
    x = 9,084,139.34/3,619.36
  6. Step 6: Final answer
    x = 2,509.87

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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.