Home / 2,798.08-4,198.49-1,981.60

Finding the Fourth Proportional to 2,798.08, 4,198.49 and 1,981.60

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Solution

The fourth proportional to 2,798.08, 4,198.49 and 1,981.60 is: 2,973.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.08 : 4,198.49 = 1,981.60 : x
  2. Step 2: Convert to fraction form
    2,798.08/4,198.49 = 1,981.60/x
  3. Step 3: Cross multiply
    2,798.08x = 4,198.49 × 1,981.60
  4. Step 4: Simplify right side
    2,798.08x = 8,319,727.78
  5. Step 5: Solve for x
    x = 8,319,727.78/2,798.08
  6. Step 6: Final answer
    x = 2,973.37

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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.