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Finding the Fourth Proportional to 3,914.34, 5,870.03 and 1,281.21

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Solution

The fourth proportional to 3,914.34, 5,870.03 and 1,281.21 is: 1,921.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.34 : 5,870.03 = 1,281.21 : x
  2. Step 2: Convert to fraction form
    3,914.34/5,870.03 = 1,281.21/x
  3. Step 3: Cross multiply
    3,914.34x = 5,870.03 × 1,281.21
  4. Step 4: Simplify right side
    3,914.34x = 7,520,734.73
  5. Step 5: Solve for x
    x = 7,520,734.73/3,914.34
  6. Step 6: Final answer
    x = 1,921.33

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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.