Home / 3,328.63-4,991.93-1,380.38

Finding the Fourth Proportional to 3,328.63, 4,991.93 and 1,380.38

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Solution

The fourth proportional to 3,328.63, 4,991.93 and 1,380.38 is: 2,070.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,328.63 : 4,991.93 = 1,380.38 : x
  2. Step 2: Convert to fraction form
    3,328.63/4,991.93 = 1,380.38/x
  3. Step 3: Cross multiply
    3,328.63x = 4,991.93 × 1,380.38
  4. Step 4: Simplify right side
    3,328.63x = 6,890,733.65
  5. Step 5: Solve for x
    x = 6,890,733.65/3,328.63
  6. Step 6: Final answer
    x = 2,070.14

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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.