Home / 3,391.22-4,679.42-1,899.05

Finding the Fourth Proportional to 3,391.22, 4,679.42 and 1,899.05

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Solution

The fourth proportional to 3,391.22, 4,679.42 and 1,899.05 is: 2,620.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.22 : 4,679.42 = 1,899.05 : x
  2. Step 2: Convert to fraction form
    3,391.22/4,679.42 = 1,899.05/x
  3. Step 3: Cross multiply
    3,391.22x = 4,679.42 × 1,899.05
  4. Step 4: Simplify right side
    3,391.22x = 8,886,430.34
  5. Step 5: Solve for x
    x = 8,886,430.34/3,391.22
  6. Step 6: Final answer
    x = 2,620.43

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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.