Home / 2,657.30-3,987.42-1,270.46

Finding the Fourth Proportional to 2,657.30, 3,987.42 and 1,270.46

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Solution

The fourth proportional to 2,657.30, 3,987.42 and 1,270.46 is: 1,906.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.30 : 3,987.42 = 1,270.46 : x
  2. Step 2: Convert to fraction form
    2,657.30/3,987.42 = 1,270.46/x
  3. Step 3: Cross multiply
    2,657.30x = 3,987.42 × 1,270.46
  4. Step 4: Simplify right side
    2,657.30x = 5,065,837.68
  5. Step 5: Solve for x
    x = 5,065,837.68/2,657.30
  6. Step 6: Final answer
    x = 1,906.39

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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.