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Finding the Fourth Proportional to 2,613.84, 3,606.78 and 1,914

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Solution

The fourth proportional to 2,613.84, 3,606.78 and 1,914 is: 2,641.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.84 : 3,606.78 = 1,914 : x
  2. Step 2: Convert to fraction form
    2,613.84/3,606.78 = 1,914/x
  3. Step 3: Cross multiply
    2,613.84x = 3,606.78 × 1,914
  4. Step 4: Simplify right side
    2,613.84x = 6,903,376.92
  5. Step 5: Solve for x
    x = 6,903,376.92/2,613.84
  6. Step 6: Final answer
    x = 2,641.09

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Why These Related Problems?

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