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Finding the Fourth Proportional to 1,398.92, 2,094.73 and 1,119.98

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Solution

The fourth proportional to 1,398.92, 2,094.73 and 1,119.98 is: 1,677.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398.92 : 2,094.73 = 1,119.98 : x
  2. Step 2: Convert to fraction form
    1,398.92/2,094.73 = 1,119.98/x
  3. Step 3: Cross multiply
    1,398.92x = 2,094.73 × 1,119.98
  4. Step 4: Simplify right side
    1,398.92x = 2,346,058.14
  5. Step 5: Solve for x
    x = 2,346,058.14/1,398.92
  6. Step 6: Final answer
    x = 1,677.06

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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.