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Finding the Fourth Proportional to 3,674.64, 5,512.23 and 1,077.78

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Solution

The fourth proportional to 3,674.64, 5,512.23 and 1,077.78 is: 1,616.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,674.64 : 5,512.23 = 1,077.78 : x
  2. Step 2: Convert to fraction form
    3,674.64/5,512.23 = 1,077.78/x
  3. Step 3: Cross multiply
    3,674.64x = 5,512.23 × 1,077.78
  4. Step 4: Simplify right side
    3,674.64x = 5,940,971.25
  5. Step 5: Solve for x
    x = 5,940,971.25/3,674.64
  6. Step 6: Final answer
    x = 1,616.75

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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.