Home / 2,006.96-2,769.64-1,221.04

Finding the Fourth Proportional to 2,006.96, 2,769.64 and 1,221.04

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Solution

The fourth proportional to 2,006.96, 2,769.64 and 1,221.04 is: 1,685.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006.96 : 2,769.64 = 1,221.04 : x
  2. Step 2: Convert to fraction form
    2,006.96/2,769.64 = 1,221.04/x
  3. Step 3: Cross multiply
    2,006.96x = 2,769.64 × 1,221.04
  4. Step 4: Simplify right side
    2,006.96x = 3,381,841.23
  5. Step 5: Solve for x
    x = 3,381,841.23/2,006.96
  6. Step 6: Final answer
    x = 1,685.06

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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.