Home / 1,436.70-2,155.12-512.27

Finding the Fourth Proportional to 1,436.70, 2,155.12 and 512.27

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Solution

The fourth proportional to 1,436.70, 2,155.12 and 512.27 is: 768.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.70 : 2,155.12 = 512.27 : x
  2. Step 2: Convert to fraction form
    1,436.70/2,155.12 = 512.27/x
  3. Step 3: Cross multiply
    1,436.70x = 2,155.12 × 512.27
  4. Step 4: Simplify right side
    1,436.70x = 1,103,991.27
  5. Step 5: Solve for x
    x = 1,103,991.27/1,436.70
  6. Step 6: Final answer
    x = 768.42

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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.