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Finding the Fourth Proportional to 1,879.52, 2,816.07 and 1,329

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Solution

The fourth proportional to 1,879.52, 2,816.07 and 1,329 is: 1,991.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,879.52 : 2,816.07 = 1,329 : x
  2. Step 2: Convert to fraction form
    1,879.52/2,816.07 = 1,329/x
  3. Step 3: Cross multiply
    1,879.52x = 2,816.07 × 1,329
  4. Step 4: Simplify right side
    1,879.52x = 3,742,557.03
  5. Step 5: Solve for x
    x = 3,742,557.03/1,879.52
  6. Step 6: Final answer
    x = 1,991.24

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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.