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Finding the Fourth Proportional to 4,879.97, 7,321.32 and 1,960.32

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Solution

The fourth proportional to 4,879.97, 7,321.32 and 1,960.32 is: 2,941.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.97 : 7,321.32 = 1,960.32 : x
  2. Step 2: Convert to fraction form
    4,879.97/7,321.32 = 1,960.32/x
  3. Step 3: Cross multiply
    4,879.97x = 7,321.32 × 1,960.32
  4. Step 4: Simplify right side
    4,879.97x = 14,352,130.02
  5. Step 5: Solve for x
    x = 14,352,130.02/4,879.97
  6. Step 6: Final answer
    x = 2,941.03

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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.