Home / 1,440.74-2,162.56-1,119.62

Finding the Fourth Proportional to 1,440.74, 2,162.56 and 1,119.62

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Solution

The fourth proportional to 1,440.74, 2,162.56 and 1,119.62 is: 1,680.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.74 : 2,162.56 = 1,119.62 : x
  2. Step 2: Convert to fraction form
    1,440.74/2,162.56 = 1,119.62/x
  3. Step 3: Cross multiply
    1,440.74x = 2,162.56 × 1,119.62
  4. Step 4: Simplify right side
    1,440.74x = 2,421,245.43
  5. Step 5: Solve for x
    x = 2,421,245.43/1,440.74
  6. Step 6: Final answer
    x = 1,680.56

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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.