Home / 1,447.90-2,171.83-1,119.32

Finding the Fourth Proportional to 1,447.90, 2,171.83 and 1,119.32

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Solution

The fourth proportional to 1,447.90, 2,171.83 and 1,119.32 is: 1,678.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.90 : 2,171.83 = 1,119.32 : x
  2. Step 2: Convert to fraction form
    1,447.90/2,171.83 = 1,119.32/x
  3. Step 3: Cross multiply
    1,447.90x = 2,171.83 × 1,119.32
  4. Step 4: Simplify right side
    1,447.90x = 2,430,972.76
  5. Step 5: Solve for x
    x = 2,430,972.76/1,447.90
  6. Step 6: Final answer
    x = 1,678.96

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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.