Home / 2,555.81-3,835.62-1,899.20

Finding the Fourth Proportional to 2,555.81, 3,835.62 and 1,899.20

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Solution

The fourth proportional to 2,555.81, 3,835.62 and 1,899.20 is: 2,850.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.81 : 3,835.62 = 1,899.20 : x
  2. Step 2: Convert to fraction form
    2,555.81/3,835.62 = 1,899.20/x
  3. Step 3: Cross multiply
    2,555.81x = 3,835.62 × 1,899.20
  4. Step 4: Simplify right side
    2,555.81x = 7,284,609.50
  5. Step 5: Solve for x
    x = 7,284,609.50/2,555.81
  6. Step 6: Final answer
    x = 2,850.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.