Home / 3,278.80-4,918.20-2,907.60

Finding the Fourth Proportional to 3,278.80, 4,918.20 and 2,907.60

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Solution

The fourth proportional to 3,278.80, 4,918.20 and 2,907.60 is: 4,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.80 : 4,918.20 = 2,907.60 : x
  2. Step 2: Convert to fraction form
    3,278.80/4,918.20 = 2,907.60/x
  3. Step 3: Cross multiply
    3,278.80x = 4,918.20 × 2,907.60
  4. Step 4: Simplify right side
    3,278.80x = 14,300,158.32
  5. Step 5: Solve for x
    x = 14,300,158.32/3,278.80
  6. Step 6: Final answer
    x = 4,361.40

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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.