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Finding the Fourth Proportional to 1,788.52, 2,679.54 and 923.80

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Solution

The fourth proportional to 1,788.52, 2,679.54 and 923.80 is: 1,384.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.52 : 2,679.54 = 923.80 : x
  2. Step 2: Convert to fraction form
    1,788.52/2,679.54 = 923.80/x
  3. Step 3: Cross multiply
    1,788.52x = 2,679.54 × 923.80
  4. Step 4: Simplify right side
    1,788.52x = 2,475,359.05
  5. Step 5: Solve for x
    x = 2,475,359.05/1,788.52
  6. Step 6: Final answer
    x = 1,384.03

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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.