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Finding the Fourth Proportional to 1,994.76, 2,749.68 and 1,404

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Solution

The fourth proportional to 1,994.76, 2,749.68 and 1,404 is: 1,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,994.76 : 2,749.68 = 1,404 : x
  2. Step 2: Convert to fraction form
    1,994.76/2,749.68 = 1,404/x
  3. Step 3: Cross multiply
    1,994.76x = 2,749.68 × 1,404
  4. Step 4: Simplify right side
    1,994.76x = 3,860,550.72
  5. Step 5: Solve for x
    x = 3,860,550.72/1,994.76
  6. Step 6: Final answer
    x = 1,935.35

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Double scale
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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.