Home / 2,212.60-3,053.58-1,218.06

Finding the Fourth Proportional to 2,212.60, 3,053.58 and 1,218.06

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Solution

The fourth proportional to 2,212.60, 3,053.58 and 1,218.06 is: 1,681.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.60 : 3,053.58 = 1,218.06 : x
  2. Step 2: Convert to fraction form
    2,212.60/3,053.58 = 1,218.06/x
  3. Step 3: Cross multiply
    2,212.60x = 3,053.58 × 1,218.06
  4. Step 4: Simplify right side
    2,212.60x = 3,719,443.65
  5. Step 5: Solve for x
    x = 3,719,443.65/2,212.60
  6. Step 6: Final answer
    x = 1,681.03

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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.