Home / 3,490.72-4,818.02-1,999.49

Finding the Fourth Proportional to 3,490.72, 4,818.02 and 1,999.49

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Solution

The fourth proportional to 3,490.72, 4,818.02 and 1,999.49 is: 2,759.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.72 : 4,818.02 = 1,999.49 : x
  2. Step 2: Convert to fraction form
    3,490.72/4,818.02 = 1,999.49/x
  3. Step 3: Cross multiply
    3,490.72x = 4,818.02 × 1,999.49
  4. Step 4: Simplify right side
    3,490.72x = 9,633,599.85
  5. Step 5: Solve for x
    x = 9,633,599.85/3,490.72
  6. Step 6: Final answer
    x = 2,759.78

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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.