Home / 3,491.97-4,818.90-1,999.91

Finding the Fourth Proportional to 3,491.97, 4,818.90 and 1,999.91

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Solution

The fourth proportional to 3,491.97, 4,818.90 and 1,999.91 is: 2,759.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.97 : 4,818.90 = 1,999.91 : x
  2. Step 2: Convert to fraction form
    3,491.97/4,818.90 = 1,999.91/x
  3. Step 3: Cross multiply
    3,491.97x = 4,818.90 × 1,999.91
  4. Step 4: Simplify right side
    3,491.97x = 9,637,342.20
  5. Step 5: Solve for x
    x = 9,637,342.20/3,491.97
  6. Step 6: Final answer
    x = 2,759.86

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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.