Home / 2,005.39-2,767.50-1,121.18

Finding the Fourth Proportional to 2,005.39, 2,767.50 and 1,121.18

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Solution

The fourth proportional to 2,005.39, 2,767.50 and 1,121.18 is: 1,547.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.39 : 2,767.50 = 1,121.18 : x
  2. Step 2: Convert to fraction form
    2,005.39/2,767.50 = 1,121.18/x
  3. Step 3: Cross multiply
    2,005.39x = 2,767.50 × 1,121.18
  4. Step 4: Simplify right side
    2,005.39x = 3,102,872.57
  5. Step 5: Solve for x
    x = 3,102,872.57/2,005.39
  6. Step 6: Final answer
    x = 1,547.27

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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.