Home / 3,391.70-4,680.32-1,899.61

Finding the Fourth Proportional to 3,391.70, 4,680.32 and 1,899.61

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Solution

The fourth proportional to 3,391.70, 4,680.32 and 1,899.61 is: 2,621.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.70 : 4,680.32 = 1,899.61 : x
  2. Step 2: Convert to fraction form
    3,391.70/4,680.32 = 1,899.61/x
  3. Step 3: Cross multiply
    3,391.70x = 4,680.32 × 1,899.61
  4. Step 4: Simplify right side
    3,391.70x = 8,890,761.48
  5. Step 5: Solve for x
    x = 8,890,761.48/3,391.70
  6. Step 6: Final answer
    x = 2,621.33

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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.