Home / 3,209.80-4,814.70-2,777.80

Finding the Fourth Proportional to 3,209.80, 4,814.70 and 2,777.80

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Solution

The fourth proportional to 3,209.80, 4,814.70 and 2,777.80 is: 4,166.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.80 : 4,814.70 = 2,777.80 : x
  2. Step 2: Convert to fraction form
    3,209.80/4,814.70 = 2,777.80/x
  3. Step 3: Cross multiply
    3,209.80x = 4,814.70 × 2,777.80
  4. Step 4: Simplify right side
    3,209.80x = 13,374,273.66
  5. Step 5: Solve for x
    x = 13,374,273.66/3,209.80
  6. Step 6: Final answer
    x = 4,166.70

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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.