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Finding the Fourth Proportional to 3,382.78, 4,668.16 and 1,890.86

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Solution

The fourth proportional to 3,382.78, 4,668.16 and 1,890.86 is: 2,609.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,382.78 : 4,668.16 = 1,890.86 : x
  2. Step 2: Convert to fraction form
    3,382.78/4,668.16 = 1,890.86/x
  3. Step 3: Cross multiply
    3,382.78x = 4,668.16 × 1,890.86
  4. Step 4: Simplify right side
    3,382.78x = 8,826,837.02
  5. Step 5: Solve for x
    x = 8,826,837.02/3,382.78
  6. Step 6: Final answer
    x = 2,609.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.