Home / 3,491.80-4,818.74-1,999.85

Finding the Fourth Proportional to 3,491.80, 4,818.74 and 1,999.85

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Solution

The fourth proportional to 3,491.80, 4,818.74 and 1,999.85 is: 2,759.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.80 : 4,818.74 = 1,999.85 : x
  2. Step 2: Convert to fraction form
    3,491.80/4,818.74 = 1,999.85/x
  3. Step 3: Cross multiply
    3,491.80x = 4,818.74 × 1,999.85
  4. Step 4: Simplify right side
    3,491.80x = 9,636,757.19
  5. Step 5: Solve for x
    x = 9,636,757.19/3,491.80
  6. Step 6: Final answer
    x = 2,759.83

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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.