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Finding the Fourth Proportional to 2,779.32, 4,169.19 and 930.44

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Solution

The fourth proportional to 2,779.32, 4,169.19 and 930.44 is: 1,395.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.32 : 4,169.19 = 930.44 : x
  2. Step 2: Convert to fraction form
    2,779.32/4,169.19 = 930.44/x
  3. Step 3: Cross multiply
    2,779.32x = 4,169.19 × 930.44
  4. Step 4: Simplify right side
    2,779.32x = 3,879,181.14
  5. Step 5: Solve for x
    x = 3,879,181.14/2,779.32
  6. Step 6: Final answer
    x = 1,395.73

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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.