Home / 2,986.83-4,120.74-1,867.34

Finding the Fourth Proportional to 2,986.83, 4,120.74 and 1,867.34

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Solution

The fourth proportional to 2,986.83, 4,120.74 and 1,867.34 is: 2,576.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.83 : 4,120.74 = 1,867.34 : x
  2. Step 2: Convert to fraction form
    2,986.83/4,120.74 = 1,867.34/x
  3. Step 3: Cross multiply
    2,986.83x = 4,120.74 × 1,867.34
  4. Step 4: Simplify right side
    2,986.83x = 7,694,822.63
  5. Step 5: Solve for x
    x = 7,694,822.63/2,986.83
  6. Step 6: Final answer
    x = 2,576.25

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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.