Home / 2,106.80-3,145.48-1,899.44

Finding the Fourth Proportional to 2,106.80, 3,145.48 and 1,899.44

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Solution

The fourth proportional to 2,106.80, 3,145.48 and 1,899.44 is: 2,835.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.80 : 3,145.48 = 1,899.44 : x
  2. Step 2: Convert to fraction form
    2,106.80/3,145.48 = 1,899.44/x
  3. Step 3: Cross multiply
    2,106.80x = 3,145.48 × 1,899.44
  4. Step 4: Simplify right side
    2,106.80x = 5,974,650.53
  5. Step 5: Solve for x
    x = 5,974,650.53/2,106.80
  6. Step 6: Final answer
    x = 2,835.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.