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Finding the Fourth Proportional to 3,309.44, 4,939.52 and 2,779.52

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Solution

The fourth proportional to 3,309.44, 4,939.52 and 2,779.52 is: 4,148.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.44 : 4,939.52 = 2,779.52 : x
  2. Step 2: Convert to fraction form
    3,309.44/4,939.52 = 2,779.52/x
  3. Step 3: Cross multiply
    3,309.44x = 4,939.52 × 2,779.52
  4. Step 4: Simplify right side
    3,309.44x = 13,729,494.63
  5. Step 5: Solve for x
    x = 13,729,494.63/3,309.44
  6. Step 6: Final answer
    x = 4,148.59

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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.