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Finding the Fourth Proportional to 1,677.74, 2,512.94 and 1,331.48

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Solution

The fourth proportional to 1,677.74, 2,512.94 and 1,331.48 is: 1,994.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.74 : 2,512.94 = 1,331.48 : x
  2. Step 2: Convert to fraction form
    1,677.74/2,512.94 = 1,331.48/x
  3. Step 3: Cross multiply
    1,677.74x = 2,512.94 × 1,331.48
  4. Step 4: Simplify right side
    1,677.74x = 3,345,929.35
  5. Step 5: Solve for x
    x = 3,345,929.35/1,677.74
  6. Step 6: Final answer
    x = 1,994.31

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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.