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Finding the Fourth Proportional to 3,779.56, 5,208.42 and 3,079.72

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Solution

The fourth proportional to 3,779.56, 5,208.42 and 3,079.72 is: 4,244.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.56 : 5,208.42 = 3,079.72 : x
  2. Step 2: Convert to fraction form
    3,779.56/5,208.42 = 3,079.72/x
  3. Step 3: Cross multiply
    3,779.56x = 5,208.42 × 3,079.72
  4. Step 4: Simplify right side
    3,779.56x = 16,040,475.24
  5. Step 5: Solve for x
    x = 16,040,475.24/3,779.56
  6. Step 6: Final answer
    x = 4,244.01

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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.