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Finding the Fourth Proportional to 3,903.70, 5,855.55 and 2,814.97

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Solution

The fourth proportional to 3,903.70, 5,855.55 and 2,814.97 is: 4,222.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.70 : 5,855.55 = 2,814.97 : x
  2. Step 2: Convert to fraction form
    3,903.70/5,855.55 = 2,814.97/x
  3. Step 3: Cross multiply
    3,903.70x = 5,855.55 × 2,814.97
  4. Step 4: Simplify right side
    3,903.70x = 16,483,197.58
  5. Step 5: Solve for x
    x = 16,483,197.58/3,903.70
  6. Step 6: Final answer
    x = 4,222.46

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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.