Home / 4,851.80-7,277.70-2,778.20

Finding the Fourth Proportional to 4,851.80, 7,277.70 and 2,778.20

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Solution

The fourth proportional to 4,851.80, 7,277.70 and 2,778.20 is: 4,167.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,851.80 : 7,277.70 = 2,778.20 : x
  2. Step 2: Convert to fraction form
    4,851.80/7,277.70 = 2,778.20/x
  3. Step 3: Cross multiply
    4,851.80x = 7,277.70 × 2,778.20
  4. Step 4: Simplify right side
    4,851.80x = 20,218,906.14
  5. Step 5: Solve for x
    x = 20,218,906.14/4,851.80
  6. Step 6: Final answer
    x = 4,167.30

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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.