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Finding the Fourth Proportional to 4,855.28, 6,699.92 and 2,759

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Solution

The fourth proportional to 4,855.28, 6,699.92 and 2,759 is: 3,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,855.28 : 6,699.92 = 2,759 : x
  2. Step 2: Convert to fraction form
    4,855.28/6,699.92 = 2,759/x
  3. Step 3: Cross multiply
    4,855.28x = 6,699.92 × 2,759
  4. Step 4: Simplify right side
    4,855.28x = 18,485,079.28
  5. Step 5: Solve for x
    x = 18,485,079.28/4,855.28
  6. Step 6: Final answer
    x = 3,807.21

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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.