Home / 2,627.21-3,938.31-1,239.62

Finding the Fourth Proportional to 2,627.21, 3,938.31 and 1,239.62

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Solution

The fourth proportional to 2,627.21, 3,938.31 and 1,239.62 is: 1,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,627.21 : 3,938.31 = 1,239.62 : x
  2. Step 2: Convert to fraction form
    2,627.21/3,938.31 = 1,239.62/x
  3. Step 3: Cross multiply
    2,627.21x = 3,938.31 × 1,239.62
  4. Step 4: Simplify right side
    2,627.21x = 4,881,988.15
  5. Step 5: Solve for x
    x = 4,881,988.15/2,627.21
  6. Step 6: Final answer
    x = 1,858.24

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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.