Home / 2,986.56-4,476-1,231.20

Finding the Fourth Proportional to 2,986.56, 4,476 and 1,231.20

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Solution

The fourth proportional to 2,986.56, 4,476 and 1,231.20 is: 1,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.56 : 4,476 = 1,231.20 : x
  2. Step 2: Convert to fraction form
    2,986.56/4,476 = 1,231.20/x
  3. Step 3: Cross multiply
    2,986.56x = 4,476 × 1,231.20
  4. Step 4: Simplify right side
    2,986.56x = 5,510,851.20
  5. Step 5: Solve for x
    x = 5,510,851.20/2,986.56
  6. Step 6: Final answer
    x = 1,845.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.