Home / 2,005.18-2,766.96-1,208.38

Finding the Fourth Proportional to 2,005.18, 2,766.96 and 1,208.38

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Solution

The fourth proportional to 2,005.18, 2,766.96 and 1,208.38 is: 1,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.18 : 2,766.96 = 1,208.38 : x
  2. Step 2: Convert to fraction form
    2,005.18/2,766.96 = 1,208.38/x
  3. Step 3: Cross multiply
    2,005.18x = 2,766.96 × 1,208.38
  4. Step 4: Simplify right side
    2,005.18x = 3,343,539.12
  5. Step 5: Solve for x
    x = 3,343,539.12/2,005.18
  6. Step 6: Final answer
    x = 1,667.45

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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.