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Finding the Fourth Proportional to 3,270.77, 4,905.46 and 1,078.98

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Solution

The fourth proportional to 3,270.77, 4,905.46 and 1,078.98 is: 1,618.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.77 : 4,905.46 = 1,078.98 : x
  2. Step 2: Convert to fraction form
    3,270.77/4,905.46 = 1,078.98/x
  3. Step 3: Cross multiply
    3,270.77x = 4,905.46 × 1,078.98
  4. Step 4: Simplify right side
    3,270.77x = 5,292,887.84
  5. Step 5: Solve for x
    x = 5,292,887.84/3,270.77
  6. Step 6: Final answer
    x = 1,618.24

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1.5x scale

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.