Home / 2,008.20-2,770.80-1,222.14

Finding the Fourth Proportional to 2,008.20, 2,770.80 and 1,222.14

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Solution

The fourth proportional to 2,008.20, 2,770.80 and 1,222.14 is: 1,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.20 : 2,770.80 = 1,222.14 : x
  2. Step 2: Convert to fraction form
    2,008.20/2,770.80 = 1,222.14/x
  3. Step 3: Cross multiply
    2,008.20x = 2,770.80 × 1,222.14
  4. Step 4: Simplify right side
    2,008.20x = 3,386,305.51
  5. Step 5: Solve for x
    x = 3,386,305.51/2,008.20
  6. Step 6: Final answer
    x = 1,686.24

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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.