Home / 3,619.61-5,420.91-1,764.91

Finding the Fourth Proportional to 3,619.61, 5,420.91 and 1,764.91

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Solution

The fourth proportional to 3,619.61, 5,420.91 and 1,764.91 is: 2,643.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.61 : 5,420.91 = 1,764.91 : x
  2. Step 2: Convert to fraction form
    3,619.61/5,420.91 = 1,764.91/x
  3. Step 3: Cross multiply
    3,619.61x = 5,420.91 × 1,764.91
  4. Step 4: Simplify right side
    3,619.61x = 9,567,418.27
  5. Step 5: Solve for x
    x = 9,567,418.27/3,619.61
  6. Step 6: Final answer
    x = 2,643.22

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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.