Home / 2,208.39-3,047.59-1,213.65

Finding the Fourth Proportional to 2,208.39, 3,047.59 and 1,213.65

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Solution

The fourth proportional to 2,208.39, 3,047.59 and 1,213.65 is: 1,674.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.39 : 3,047.59 = 1,213.65 : x
  2. Step 2: Convert to fraction form
    2,208.39/3,047.59 = 1,213.65/x
  3. Step 3: Cross multiply
    2,208.39x = 3,047.59 × 1,213.65
  4. Step 4: Simplify right side
    2,208.39x = 3,698,692.37
  5. Step 5: Solve for x
    x = 3,698,692.37/2,208.39
  6. Step 6: Final answer
    x = 1,674.84

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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.