Home / 3,460.74-5,190.09-1,380.06

Finding the Fourth Proportional to 3,460.74, 5,190.09 and 1,380.06

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Solution

The fourth proportional to 3,460.74, 5,190.09 and 1,380.06 is: 2,069.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.74 : 5,190.09 = 1,380.06 : x
  2. Step 2: Convert to fraction form
    3,460.74/5,190.09 = 1,380.06/x
  3. Step 3: Cross multiply
    3,460.74x = 5,190.09 × 1,380.06
  4. Step 4: Simplify right side
    3,460.74x = 7,162,635.61
  5. Step 5: Solve for x
    x = 7,162,635.61/3,460.74
  6. Step 6: Final answer
    x = 2,069.68

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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.