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Finding the Fourth Proportional to 3,898.65, 5,381.91 and 2,484.28

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Solution

The fourth proportional to 3,898.65, 5,381.91 and 2,484.28 is: 3,429.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.65 : 5,381.91 = 2,484.28 : x
  2. Step 2: Convert to fraction form
    3,898.65/5,381.91 = 2,484.28/x
  3. Step 3: Cross multiply
    3,898.65x = 5,381.91 × 2,484.28
  4. Step 4: Simplify right side
    3,898.65x = 13,370,171.37
  5. Step 5: Solve for x
    x = 13,370,171.37/3,898.65
  6. Step 6: Final answer
    x = 3,429.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.