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Finding the Fourth Proportional to 2,381.82, 3,569.82 and 1,688.68

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Solution

The fourth proportional to 2,381.82, 3,569.82 and 1,688.68 is: 2,530.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.82 : 3,569.82 = 1,688.68 : x
  2. Step 2: Convert to fraction form
    2,381.82/3,569.82 = 1,688.68/x
  3. Step 3: Cross multiply
    2,381.82x = 3,569.82 × 1,688.68
  4. Step 4: Simplify right side
    2,381.82x = 6,028,283.64
  5. Step 5: Solve for x
    x = 6,028,283.64/2,381.82
  6. Step 6: Final answer
    x = 2,530.96

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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.