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Finding the Fourth Proportional to 3,386.85, 4,673.86 and 1,894.86

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Solution

The fourth proportional to 3,386.85, 4,673.86 and 1,894.86 is: 2,614.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.85 : 4,673.86 = 1,894.86 : x
  2. Step 2: Convert to fraction form
    3,386.85/4,673.86 = 1,894.86/x
  3. Step 3: Cross multiply
    3,386.85x = 4,673.86 × 1,894.86
  4. Step 4: Simplify right side
    3,386.85x = 8,856,310.36
  5. Step 5: Solve for x
    x = 8,856,310.36/3,386.85
  6. Step 6: Final answer
    x = 2,614.91

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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.