Home / 2,721.25-4,078.81-1,488.25

Finding the Fourth Proportional to 2,721.25, 4,078.81 and 1,488.25

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Solution

The fourth proportional to 2,721.25, 4,078.81 and 1,488.25 is: 2,230.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.25 : 4,078.81 = 1,488.25 : x
  2. Step 2: Convert to fraction form
    2,721.25/4,078.81 = 1,488.25/x
  3. Step 3: Cross multiply
    2,721.25x = 4,078.81 × 1,488.25
  4. Step 4: Simplify right side
    2,721.25x = 6,070,288.98
  5. Step 5: Solve for x
    x = 6,070,288.98/2,721.25
  6. Step 6: Final answer
    x = 2,230.70

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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.