Home / 4,919.18-7,378.75-2,107.60

Finding the Fourth Proportional to 4,919.18, 7,378.75 and 2,107.60

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Solution

The fourth proportional to 4,919.18, 7,378.75 and 2,107.60 is: 3,161.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.18 : 7,378.75 = 2,107.60 : x
  2. Step 2: Convert to fraction form
    4,919.18/7,378.75 = 2,107.60/x
  3. Step 3: Cross multiply
    4,919.18x = 7,378.75 × 2,107.60
  4. Step 4: Simplify right side
    4,919.18x = 15,551,467.34
  5. Step 5: Solve for x
    x = 15,551,467.34/4,919.18
  6. Step 6: Final answer
    x = 3,161.39

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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.