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Finding the Fourth Proportional to 3,808.89, 5,711.85 and 1,617.71

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Solution

The fourth proportional to 3,808.89, 5,711.85 and 1,617.71 is: 2,425.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.89 : 5,711.85 = 1,617.71 : x
  2. Step 2: Convert to fraction form
    3,808.89/5,711.85 = 1,617.71/x
  3. Step 3: Cross multiply
    3,808.89x = 5,711.85 × 1,617.71
  4. Step 4: Simplify right side
    3,808.89x = 9,240,088.30
  5. Step 5: Solve for x
    x = 9,240,088.30/3,808.89
  6. Step 6: Final answer
    x = 2,425.93

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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.