Home / 3,619.99-5,421.47-1,765.29

Finding the Fourth Proportional to 3,619.99, 5,421.47 and 1,765.29

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Solution

The fourth proportional to 3,619.99, 5,421.47 and 1,765.29 is: 2,643.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.99 : 5,421.47 = 1,765.29 : x
  2. Step 2: Convert to fraction form
    3,619.99/5,421.47 = 1,765.29/x
  3. Step 3: Cross multiply
    3,619.99x = 5,421.47 × 1,765.29
  4. Step 4: Simplify right side
    3,619.99x = 9,570,466.78
  5. Step 5: Solve for x
    x = 9,570,466.78/3,619.99
  6. Step 6: Final answer
    x = 2,643.78

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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.