Home / 2,992.72-4,131.60-2,001.28

Finding the Fourth Proportional to 2,992.72, 4,131.60 and 2,001.28

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Solution

The fourth proportional to 2,992.72, 4,131.60 and 2,001.28 is: 2,762.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.72 : 4,131.60 = 2,001.28 : x
  2. Step 2: Convert to fraction form
    2,992.72/4,131.60 = 2,001.28/x
  3. Step 3: Cross multiply
    2,992.72x = 4,131.60 × 2,001.28
  4. Step 4: Simplify right side
    2,992.72x = 8,268,488.45
  5. Step 5: Solve for x
    x = 8,268,488.45/2,992.72
  6. Step 6: Final answer
    x = 2,762.87

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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.