Home / 2,213.21-3,054.23-1,218.56

Finding the Fourth Proportional to 2,213.21, 3,054.23 and 1,218.56

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Solution

The fourth proportional to 2,213.21, 3,054.23 and 1,218.56 is: 1,681.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.21 : 3,054.23 = 1,218.56 : x
  2. Step 2: Convert to fraction form
    2,213.21/3,054.23 = 1,218.56/x
  3. Step 3: Cross multiply
    2,213.21x = 3,054.23 × 1,218.56
  4. Step 4: Simplify right side
    2,213.21x = 3,721,762.51
  5. Step 5: Solve for x
    x = 3,721,762.51/2,213.21
  6. Step 6: Final answer
    x = 1,681.61

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Double scale
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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.