Home / 4,919.86-7,379.18-2,148.44

Finding the Fourth Proportional to 4,919.86, 7,379.18 and 2,148.44

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Solution

The fourth proportional to 4,919.86, 7,379.18 and 2,148.44 is: 3,222.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.86 : 7,379.18 = 2,148.44 : x
  2. Step 2: Convert to fraction form
    4,919.86/7,379.18 = 2,148.44/x
  3. Step 3: Cross multiply
    4,919.86x = 7,379.18 × 2,148.44
  4. Step 4: Simplify right side
    4,919.86x = 15,853,714.74
  5. Step 5: Solve for x
    x = 15,853,714.74/4,919.86
  6. Step 6: Final answer
    x = 3,222.39

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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.