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Finding the Fourth Proportional to 1,943.62, 2,915.72 and 903.73

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Solution

The fourth proportional to 1,943.62, 2,915.72 and 903.73 is: 1,355.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.62 : 2,915.72 = 903.73 : x
  2. Step 2: Convert to fraction form
    1,943.62/2,915.72 = 903.73/x
  3. Step 3: Cross multiply
    1,943.62x = 2,915.72 × 903.73
  4. Step 4: Simplify right side
    1,943.62x = 2,635,011.83
  5. Step 5: Solve for x
    x = 2,635,011.83/1,943.62
  6. Step 6: Final answer
    x = 1,355.73

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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.