Home / 1,780.14-2,670.27-481.62

Finding the Fourth Proportional to 1,780.14, 2,670.27 and 481.62

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Solution

The fourth proportional to 1,780.14, 2,670.27 and 481.62 is: 722.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.14 : 2,670.27 = 481.62 : x
  2. Step 2: Convert to fraction form
    1,780.14/2,670.27 = 481.62/x
  3. Step 3: Cross multiply
    1,780.14x = 2,670.27 × 481.62
  4. Step 4: Simplify right side
    1,780.14x = 1,286,055.44
  5. Step 5: Solve for x
    x = 1,286,055.44/1,780.14
  6. Step 6: Final answer
    x = 722.45

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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.