Home / 3,228.30-4,842-1,147.74

Finding the Fourth Proportional to 3,228.30, 4,842 and 1,147.74

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Solution

The fourth proportional to 3,228.30, 4,842 and 1,147.74 is: 1,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.30 : 4,842 = 1,147.74 : x
  2. Step 2: Convert to fraction form
    3,228.30/4,842 = 1,147.74/x
  3. Step 3: Cross multiply
    3,228.30x = 4,842 × 1,147.74
  4. Step 4: Simplify right side
    3,228.30x = 5,557,357.08
  5. Step 5: Solve for x
    x = 5,557,357.08/3,228.30
  6. Step 6: Final answer
    x = 1,721.45

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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.