Home / 1,429.24-2,144.04-389.27

Finding the Fourth Proportional to 1,429.24, 2,144.04 and 389.27

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Solution

The fourth proportional to 1,429.24, 2,144.04 and 389.27 is: 583.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.24 : 2,144.04 = 389.27 : x
  2. Step 2: Convert to fraction form
    1,429.24/2,144.04 = 389.27/x
  3. Step 3: Cross multiply
    1,429.24x = 2,144.04 × 389.27
  4. Step 4: Simplify right side
    1,429.24x = 834,617.64
  5. Step 5: Solve for x
    x = 834,617.64/1,429.24
  6. Step 6: Final answer
    x = 583.96

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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.