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Finding the Fourth Proportional to 1,902.79, 2,625.80 and 1,063.50

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Solution

The fourth proportional to 1,902.79, 2,625.80 and 1,063.50 is: 1,467.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.79 : 2,625.80 = 1,063.50 : x
  2. Step 2: Convert to fraction form
    1,902.79/2,625.80 = 1,063.50/x
  3. Step 3: Cross multiply
    1,902.79x = 2,625.80 × 1,063.50
  4. Step 4: Simplify right side
    1,902.79x = 2,792,551.27
  5. Step 5: Solve for x
    x = 2,792,551.27/1,902.79
  6. Step 6: Final answer
    x = 1,467.61

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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.