Home / 4,979.30-7,469.49-1,860.80

Finding the Fourth Proportional to 4,979.30, 7,469.49 and 1,860.80

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Solution

The fourth proportional to 4,979.30, 7,469.49 and 1,860.80 is: 2,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.30 : 7,469.49 = 1,860.80 : x
  2. Step 2: Convert to fraction form
    4,979.30/7,469.49 = 1,860.80/x
  3. Step 3: Cross multiply
    4,979.30x = 7,469.49 × 1,860.80
  4. Step 4: Simplify right side
    4,979.30x = 13,899,226.99
  5. Step 5: Solve for x
    x = 13,899,226.99/4,979.30
  6. Step 6: Final answer
    x = 2,791.40

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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.