Home / 3,491.60-4,817.31-1,999.23

Finding the Fourth Proportional to 3,491.60, 4,817.31 and 1,999.23

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Solution

The fourth proportional to 3,491.60, 4,817.31 and 1,999.23 is: 2,758.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.60 : 4,817.31 = 1,999.23 : x
  2. Step 2: Convert to fraction form
    3,491.60/4,817.31 = 1,999.23/x
  3. Step 3: Cross multiply
    3,491.60x = 4,817.31 × 1,999.23
  4. Step 4: Simplify right side
    3,491.60x = 9,630,910.67
  5. Step 5: Solve for x
    x = 9,630,910.67/3,491.60
  6. Step 6: Final answer
    x = 2,758.31

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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.