Home / 3,490.86-4,817.45-1,998.91

Finding the Fourth Proportional to 3,490.86, 4,817.45 and 1,998.91

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Solution

The fourth proportional to 3,490.86, 4,817.45 and 1,998.91 is: 2,758.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.86 : 4,817.45 = 1,998.91 : x
  2. Step 2: Convert to fraction form
    3,490.86/4,817.45 = 1,998.91/x
  3. Step 3: Cross multiply
    3,490.86x = 4,817.45 × 1,998.91
  4. Step 4: Simplify right side
    3,490.86x = 9,629,648.98
  5. Step 5: Solve for x
    x = 9,629,648.98/3,490.86
  6. Step 6: Final answer
    x = 2,758.53

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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.