Home / 3,619.45-5,431.20-1,539.10

Finding the Fourth Proportional to 3,619.45, 5,431.20 and 1,539.10

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Solution

The fourth proportional to 3,619.45, 5,431.20 and 1,539.10 is: 2,309.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.45 : 5,431.20 = 1,539.10 : x
  2. Step 2: Convert to fraction form
    3,619.45/5,431.20 = 1,539.10/x
  3. Step 3: Cross multiply
    3,619.45x = 5,431.20 × 1,539.10
  4. Step 4: Simplify right side
    3,619.45x = 8,359,159.92
  5. Step 5: Solve for x
    x = 8,359,159.92/3,619.45
  6. Step 6: Final answer
    x = 2,309.51

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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.