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Finding the Fourth Proportional to 2,976.77, 4,464.81 and 755.60

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Solution

The fourth proportional to 2,976.77, 4,464.81 and 755.60 is: 1,133.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.77 : 4,464.81 = 755.60 : x
  2. Step 2: Convert to fraction form
    2,976.77/4,464.81 = 755.60/x
  3. Step 3: Cross multiply
    2,976.77x = 4,464.81 × 755.60
  4. Step 4: Simplify right side
    2,976.77x = 3,373,588.11
  5. Step 5: Solve for x
    x = 3,373,588.11/2,976.77
  6. Step 6: Final answer
    x = 1,133.31

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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.