Home / 2,106.03-2,905.82-1,221.66

Finding the Fourth Proportional to 2,106.03, 2,905.82 and 1,221.66

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Solution

The fourth proportional to 2,106.03, 2,905.82 and 1,221.66 is: 1,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.03 : 2,905.82 = 1,221.66 : x
  2. Step 2: Convert to fraction form
    2,106.03/2,905.82 = 1,221.66/x
  3. Step 3: Cross multiply
    2,106.03x = 2,905.82 × 1,221.66
  4. Step 4: Simplify right side
    2,106.03x = 3,549,924.06
  5. Step 5: Solve for x
    x = 3,549,924.06/2,106.03
  6. Step 6: Final answer
    x = 1,685.60

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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.