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Finding the Fourth Proportional to 3,903.84, 5,855.94 and 2,171.16

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Solution

The fourth proportional to 3,903.84, 5,855.94 and 2,171.16 is: 3,256.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.84 : 5,855.94 = 2,171.16 : x
  2. Step 2: Convert to fraction form
    3,903.84/5,855.94 = 2,171.16/x
  3. Step 3: Cross multiply
    3,903.84x = 5,855.94 × 2,171.16
  4. Step 4: Simplify right side
    3,903.84x = 12,714,182.69
  5. Step 5: Solve for x
    x = 12,714,182.69/3,903.84
  6. Step 6: Final answer
    x = 3,256.84

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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.