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Finding the Fourth Proportional to 1,915.84, 2,873.67 and 683.23

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Solution

The fourth proportional to 1,915.84, 2,873.67 and 683.23 is: 1,024.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.84 : 2,873.67 = 683.23 : x
  2. Step 2: Convert to fraction form
    1,915.84/2,873.67 = 683.23/x
  3. Step 3: Cross multiply
    1,915.84x = 2,873.67 × 683.23
  4. Step 4: Simplify right side
    1,915.84x = 1,963,367.04
  5. Step 5: Solve for x
    x = 1,963,367.04/1,915.84
  6. Step 6: Final answer
    x = 1,024.81

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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.