Home / 1,992-2,748.36-1,152.72

Finding the Fourth Proportional to 1,992, 2,748.36 and 1,152.72

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Solution

The fourth proportional to 1,992, 2,748.36 and 1,152.72 is: 1,590.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992 : 2,748.36 = 1,152.72 : x
  2. Step 2: Convert to fraction form
    1,992/2,748.36 = 1,152.72/x
  3. Step 3: Cross multiply
    1,992x = 2,748.36 × 1,152.72
  4. Step 4: Simplify right side
    1,992x = 3,168,089.54
  5. Step 5: Solve for x
    x = 3,168,089.54/1,992
  6. Step 6: Final answer
    x = 1,590.41

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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.