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Finding the Fourth Proportional to 3,060.78, 4,590.36 and 1,329

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Solution

The fourth proportional to 3,060.78, 4,590.36 and 1,329 is: 1,993.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,060.78 : 4,590.36 = 1,329 : x
  2. Step 2: Convert to fraction form
    3,060.78/4,590.36 = 1,329/x
  3. Step 3: Cross multiply
    3,060.78x = 4,590.36 × 1,329
  4. Step 4: Simplify right side
    3,060.78x = 6,100,588.44
  5. Step 5: Solve for x
    x = 6,100,588.44/3,060.78
  6. Step 6: Final answer
    x = 1,993.15

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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.