Home / 1,524.05-2,285.61-428.15

Finding the Fourth Proportional to 1,524.05, 2,285.61 and 428.15

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Solution

The fourth proportional to 1,524.05, 2,285.61 and 428.15 is: 642.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,524.05 : 2,285.61 = 428.15 : x
  2. Step 2: Convert to fraction form
    1,524.05/2,285.61 = 428.15/x
  3. Step 3: Cross multiply
    1,524.05x = 2,285.61 × 428.15
  4. Step 4: Simplify right side
    1,524.05x = 978,583.92
  5. Step 5: Solve for x
    x = 978,583.92/1,524.05
  6. Step 6: Final answer
    x = 642.09

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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.