Home / 2,213.20-3,054.06-1,218.34

Finding the Fourth Proportional to 2,213.20, 3,054.06 and 1,218.34

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Solution

The fourth proportional to 2,213.20, 3,054.06 and 1,218.34 is: 1,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.20 : 3,054.06 = 1,218.34 : x
  2. Step 2: Convert to fraction form
    2,213.20/3,054.06 = 1,218.34/x
  3. Step 3: Cross multiply
    2,213.20x = 3,054.06 × 1,218.34
  4. Step 4: Simplify right side
    2,213.20x = 3,720,883.46
  5. Step 5: Solve for x
    x = 3,720,883.46/2,213.20
  6. Step 6: Final answer
    x = 1,681.22

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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.