Home / 1,324.24-1,985.72-399.62

Finding the Fourth Proportional to 1,324.24, 1,985.72 and 399.62

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Solution

The fourth proportional to 1,324.24, 1,985.72 and 399.62 is: 599.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.24 : 1,985.72 = 399.62 : x
  2. Step 2: Convert to fraction form
    1,324.24/1,985.72 = 399.62/x
  3. Step 3: Cross multiply
    1,324.24x = 1,985.72 × 399.62
  4. Step 4: Simplify right side
    1,324.24x = 793,536.39
  5. Step 5: Solve for x
    x = 793,536.39/1,324.24
  6. Step 6: Final answer
    x = 599.24

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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.