Home / 4,518.60-6,780.78-1,921.54

Finding the Fourth Proportional to 4,518.60, 6,780.78 and 1,921.54

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Solution

The fourth proportional to 4,518.60, 6,780.78 and 1,921.54 is: 2,883.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,518.60 : 6,780.78 = 1,921.54 : x
  2. Step 2: Convert to fraction form
    4,518.60/6,780.78 = 1,921.54/x
  3. Step 3: Cross multiply
    4,518.60x = 6,780.78 × 1,921.54
  4. Step 4: Simplify right side
    4,518.60x = 13,029,540.00
  5. Step 5: Solve for x
    x = 13,029,540.00/4,518.60
  6. Step 6: Final answer
    x = 2,883.53

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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.