Home / 2,217.08-3,059.48-1,208.80

Finding the Fourth Proportional to 2,217.08, 3,059.48 and 1,208.80

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Solution

The fourth proportional to 2,217.08, 3,059.48 and 1,208.80 is: 1,668.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.08 : 3,059.48 = 1,208.80 : x
  2. Step 2: Convert to fraction form
    2,217.08/3,059.48 = 1,208.80/x
  3. Step 3: Cross multiply
    2,217.08x = 3,059.48 × 1,208.80
  4. Step 4: Simplify right side
    2,217.08x = 3,698,299.42
  5. Step 5: Solve for x
    x = 3,698,299.42/2,217.08
  6. Step 6: Final answer
    x = 1,668.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.