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Finding the Fourth Proportional to 1,890.79, 2,836.32 and 504.12

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Solution

The fourth proportional to 1,890.79, 2,836.32 and 504.12 is: 756.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.79 : 2,836.32 = 504.12 : x
  2. Step 2: Convert to fraction form
    1,890.79/2,836.32 = 504.12/x
  3. Step 3: Cross multiply
    1,890.79x = 2,836.32 × 504.12
  4. Step 4: Simplify right side
    1,890.79x = 1,429,843.12
  5. Step 5: Solve for x
    x = 1,429,843.12/1,890.79
  6. Step 6: Final answer
    x = 756.22

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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.