Home / 1,619.20-2,424.64-1,331.20

Finding the Fourth Proportional to 1,619.20, 2,424.64 and 1,331.20

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Solution

The fourth proportional to 1,619.20, 2,424.64 and 1,331.20 is: 1,993.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.20 : 2,424.64 = 1,331.20 : x
  2. Step 2: Convert to fraction form
    1,619.20/2,424.64 = 1,331.20/x
  3. Step 3: Cross multiply
    1,619.20x = 2,424.64 × 1,331.20
  4. Step 4: Simplify right side
    1,619.20x = 3,227,680.77
  5. Step 5: Solve for x
    x = 3,227,680.77/1,619.20
  6. Step 6: Final answer
    x = 1,993.38

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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.