Home / 2,984.31-4,120.07-1,992.87

Finding the Fourth Proportional to 2,984.31, 4,120.07 and 1,992.87

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Solution

The fourth proportional to 2,984.31, 4,120.07 and 1,992.87 is: 2,751.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,984.31 : 4,120.07 = 1,992.87 : x
  2. Step 2: Convert to fraction form
    2,984.31/4,120.07 = 1,992.87/x
  3. Step 3: Cross multiply
    2,984.31x = 4,120.07 × 1,992.87
  4. Step 4: Simplify right side
    2,984.31x = 8,210,753.94
  5. Step 5: Solve for x
    x = 8,210,753.94/2,984.31
  6. Step 6: Final answer
    x = 2,751.31

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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.