Home / 2,208.12-3,047.29-1,213.49

Finding the Fourth Proportional to 2,208.12, 3,047.29 and 1,213.49

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Solution

The fourth proportional to 2,208.12, 3,047.29 and 1,213.49 is: 1,674.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.12 : 3,047.29 = 1,213.49 : x
  2. Step 2: Convert to fraction form
    2,208.12/3,047.29 = 1,213.49/x
  3. Step 3: Cross multiply
    2,208.12x = 3,047.29 × 1,213.49
  4. Step 4: Simplify right side
    2,208.12x = 3,697,860.53
  5. Step 5: Solve for x
    x = 3,697,860.53/2,208.12
  6. Step 6: Final answer
    x = 1,674.66

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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.