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Finding the Fourth Proportional to 3,328.90, 4,993.35 and 1,380.58

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Solution

The fourth proportional to 3,328.90, 4,993.35 and 1,380.58 is: 2,070.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,328.90 : 4,993.35 = 1,380.58 : x
  2. Step 2: Convert to fraction form
    3,328.90/4,993.35 = 1,380.58/x
  3. Step 3: Cross multiply
    3,328.90x = 4,993.35 × 1,380.58
  4. Step 4: Simplify right side
    3,328.90x = 6,893,719.14
  5. Step 5: Solve for x
    x = 6,893,719.14/3,328.90
  6. Step 6: Final answer
    x = 2,070.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.