Home / 2,127.31-3,188.01-1,189.41

Finding the Fourth Proportional to 2,127.31, 3,188.01 and 1,189.41

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Solution

The fourth proportional to 2,127.31, 3,188.01 and 1,189.41 is: 1,782.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.31 : 3,188.01 = 1,189.41 : x
  2. Step 2: Convert to fraction form
    2,127.31/3,188.01 = 1,189.41/x
  3. Step 3: Cross multiply
    2,127.31x = 3,188.01 × 1,189.41
  4. Step 4: Simplify right side
    2,127.31x = 3,791,845.76
  5. Step 5: Solve for x
    x = 3,791,845.76/2,127.31
  6. Step 6: Final answer
    x = 1,782.46

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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.