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Finding the Fourth Proportional to 2,580.66, 3,868.63 and 936.84

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Solution

The fourth proportional to 2,580.66, 3,868.63 and 936.84 is: 1,404.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.66 : 3,868.63 = 936.84 : x
  2. Step 2: Convert to fraction form
    2,580.66/3,868.63 = 936.84/x
  3. Step 3: Cross multiply
    2,580.66x = 3,868.63 × 936.84
  4. Step 4: Simplify right side
    2,580.66x = 3,624,287.33
  5. Step 5: Solve for x
    x = 3,624,287.33/2,580.66
  6. Step 6: Final answer
    x = 1,404.40

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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.