Home / 2,005.49-2,767.53-1,121.38

Finding the Fourth Proportional to 2,005.49, 2,767.53 and 1,121.38

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Solution

The fourth proportional to 2,005.49, 2,767.53 and 1,121.38 is: 1,547.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.49 : 2,767.53 = 1,121.38 : x
  2. Step 2: Convert to fraction form
    2,005.49/2,767.53 = 1,121.38/x
  3. Step 3: Cross multiply
    2,005.49x = 2,767.53 × 1,121.38
  4. Step 4: Simplify right side
    2,005.49x = 3,103,450.08
  5. Step 5: Solve for x
    x = 3,103,450.08/2,005.49
  6. Step 6: Final answer
    x = 1,547.48

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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.