Home / 5,687.68-8,515.79-2,908.36

Finding the Fourth Proportional to 5,687.68, 8,515.79 and 2,908.36

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Solution

The fourth proportional to 5,687.68, 8,515.79 and 2,908.36 is: 4,354.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.68 : 8,515.79 = 2,908.36 : x
  2. Step 2: Convert to fraction form
    5,687.68/8,515.79 = 2,908.36/x
  3. Step 3: Cross multiply
    5,687.68x = 8,515.79 × 2,908.36
  4. Step 4: Simplify right side
    5,687.68x = 24,766,983.00
  5. Step 5: Solve for x
    x = 24,766,983.00/5,687.68
  6. Step 6: Final answer
    x = 4,354.50

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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.