Home / 2,221.36-3,065.46-1,213.13

Finding the Fourth Proportional to 2,221.36, 3,065.46 and 1,213.13

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Solution

The fourth proportional to 2,221.36, 3,065.46 and 1,213.13 is: 1,674.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.36 : 3,065.46 = 1,213.13 : x
  2. Step 2: Convert to fraction form
    2,221.36/3,065.46 = 1,213.13/x
  3. Step 3: Cross multiply
    2,221.36x = 3,065.46 × 1,213.13
  4. Step 4: Simplify right side
    2,221.36x = 3,718,804.60
  5. Step 5: Solve for x
    x = 3,718,804.60/2,221.36
  6. Step 6: Final answer
    x = 1,674.11

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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.