Home / 2,006.09-2,768.08-1,121.72

Finding the Fourth Proportional to 2,006.09, 2,768.08 and 1,121.72

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Solution

The fourth proportional to 2,006.09, 2,768.08 and 1,121.72 is: 1,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006.09 : 2,768.08 = 1,121.72 : x
  2. Step 2: Convert to fraction form
    2,006.09/2,768.08 = 1,121.72/x
  3. Step 3: Cross multiply
    2,006.09x = 2,768.08 × 1,121.72
  4. Step 4: Simplify right side
    2,006.09x = 3,104,994.05
  5. Step 5: Solve for x
    x = 3,104,994.05/2,006.09
  6. Step 6: Final answer
    x = 1,547.79

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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.