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Finding the Fourth Proportional to 3,158.76, 4,738.12 and 1,077.76

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Solution

The fourth proportional to 3,158.76, 4,738.12 and 1,077.76 is: 1,616.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.76 : 4,738.12 = 1,077.76 : x
  2. Step 2: Convert to fraction form
    3,158.76/4,738.12 = 1,077.76/x
  3. Step 3: Cross multiply
    3,158.76x = 4,738.12 × 1,077.76
  4. Step 4: Simplify right side
    3,158.76x = 5,106,556.21
  5. Step 5: Solve for x
    x = 5,106,556.21/3,158.76
  6. Step 6: Final answer
    x = 1,616.63

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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.