Home / 2,005.67-2,768.08-1,121.65

Finding the Fourth Proportional to 2,005.67, 2,768.08 and 1,121.65

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Solution

The fourth proportional to 2,005.67, 2,768.08 and 1,121.65 is: 1,548.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.67 : 2,768.08 = 1,121.65 : x
  2. Step 2: Convert to fraction form
    2,005.67/2,768.08 = 1,121.65/x
  3. Step 3: Cross multiply
    2,005.67x = 2,768.08 × 1,121.65
  4. Step 4: Simplify right side
    2,005.67x = 3,104,807.21
  5. Step 5: Solve for x
    x = 3,104,807.21/2,005.67
  6. Step 6: Final answer
    x = 1,548.02

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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.