Home / 2,986.16-4,112.53-2,921.58

Finding the Fourth Proportional to 2,986.16, 4,112.53 and 2,921.58

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Solution

The fourth proportional to 2,986.16, 4,112.53 and 2,921.58 is: 4,023.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.16 : 4,112.53 = 2,921.58 : x
  2. Step 2: Convert to fraction form
    2,986.16/4,112.53 = 2,921.58/x
  3. Step 3: Cross multiply
    2,986.16x = 4,112.53 × 2,921.58
  4. Step 4: Simplify right side
    2,986.16x = 12,015,078.09
  5. Step 5: Solve for x
    x = 12,015,078.09/2,986.16
  6. Step 6: Final answer
    x = 4,023.59

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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.