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Finding the Fourth Proportional to 4,910.64, 6,775.92 and 2,786.32

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Solution

The fourth proportional to 4,910.64, 6,775.92 and 2,786.32 is: 3,844.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,910.64 : 6,775.92 = 2,786.32 : x
  2. Step 2: Convert to fraction form
    4,910.64/6,775.92 = 2,786.32/x
  3. Step 3: Cross multiply
    4,910.64x = 6,775.92 × 2,786.32
  4. Step 4: Simplify right side
    4,910.64x = 18,879,881.41
  5. Step 5: Solve for x
    x = 18,879,881.41/4,910.64
  6. Step 6: Final answer
    x = 3,844.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.