Home / 1,424.36-2,136.44-384.42

Finding the Fourth Proportional to 1,424.36, 2,136.44 and 384.42

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Solution

The fourth proportional to 1,424.36, 2,136.44 and 384.42 is: 576.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.36 : 2,136.44 = 384.42 : x
  2. Step 2: Convert to fraction form
    1,424.36/2,136.44 = 384.42/x
  3. Step 3: Cross multiply
    1,424.36x = 2,136.44 × 384.42
  4. Step 4: Simplify right side
    1,424.36x = 821,299.24
  5. Step 5: Solve for x
    x = 821,299.24/1,424.36
  6. Step 6: Final answer
    x = 576.61

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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.