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Finding the Fourth Proportional to 2,944.13, 4,415.86 and 864.15

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Solution

The fourth proportional to 2,944.13, 4,415.86 and 864.15 is: 1,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,944.13 : 4,415.86 = 864.15 : x
  2. Step 2: Convert to fraction form
    2,944.13/4,415.86 = 864.15/x
  3. Step 3: Cross multiply
    2,944.13x = 4,415.86 × 864.15
  4. Step 4: Simplify right side
    2,944.13x = 3,815,949.94
  5. Step 5: Solve for x
    x = 3,815,949.94/2,944.13
  6. Step 6: Final answer
    x = 1,296.12

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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.