Home / 3,619.08-5,420.52-1,665.36

Finding the Fourth Proportional to 3,619.08, 5,420.52 and 1,665.36

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Solution

The fourth proportional to 3,619.08, 5,420.52 and 1,665.36 is: 2,494.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.08 : 5,420.52 = 1,665.36 : x
  2. Step 2: Convert to fraction form
    3,619.08/5,420.52 = 1,665.36/x
  3. Step 3: Cross multiply
    3,619.08x = 5,420.52 × 1,665.36
  4. Step 4: Simplify right side
    3,619.08x = 9,027,117.19
  5. Step 5: Solve for x
    x = 9,027,117.19/3,619.08
  6. Step 6: Final answer
    x = 2,494.31

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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.