Home / 4,918.20-7,374.74-1,839.80

Finding the Fourth Proportional to 4,918.20, 7,374.74 and 1,839.80

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Solution

The fourth proportional to 4,918.20, 7,374.74 and 1,839.80 is: 2,758.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.20 : 7,374.74 = 1,839.80 : x
  2. Step 2: Convert to fraction form
    4,918.20/7,374.74 = 1,839.80/x
  3. Step 3: Cross multiply
    4,918.20x = 7,374.74 × 1,839.80
  4. Step 4: Simplify right side
    4,918.20x = 13,568,046.65
  5. Step 5: Solve for x
    x = 13,568,046.65/4,918.20
  6. Step 6: Final answer
    x = 2,758.74

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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.