Home / 1,219.36-1,828.44-439.32

Finding the Fourth Proportional to 1,219.36, 1,828.44 and 439.32

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Solution

The fourth proportional to 1,219.36, 1,828.44 and 439.32 is: 658.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.36 : 1,828.44 = 439.32 : x
  2. Step 2: Convert to fraction form
    1,219.36/1,828.44 = 439.32/x
  3. Step 3: Cross multiply
    1,219.36x = 1,828.44 × 439.32
  4. Step 4: Simplify right side
    1,219.36x = 803,270.26
  5. Step 5: Solve for x
    x = 803,270.26/1,219.36
  6. Step 6: Final answer
    x = 658.76

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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.