Home / 2,919.12-4,349.18-2,779.80

Finding the Fourth Proportional to 2,919.12, 4,349.18 and 2,779.80

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Solution

The fourth proportional to 2,919.12, 4,349.18 and 2,779.80 is: 4,141.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.12 : 4,349.18 = 2,779.80 : x
  2. Step 2: Convert to fraction form
    2,919.12/4,349.18 = 2,779.80/x
  3. Step 3: Cross multiply
    2,919.12x = 4,349.18 × 2,779.80
  4. Step 4: Simplify right side
    2,919.12x = 12,089,847.09
  5. Step 5: Solve for x
    x = 12,089,847.09/2,919.12
  6. Step 6: Final answer
    x = 4,141.61

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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.