Home / 1,331.56-1,998.38-923.57

Finding the Fourth Proportional to 1,331.56, 1,998.38 and 923.57

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Solution

The fourth proportional to 1,331.56, 1,998.38 and 923.57 is: 1,386.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.56 : 1,998.38 = 923.57 : x
  2. Step 2: Convert to fraction form
    1,331.56/1,998.38 = 923.57/x
  3. Step 3: Cross multiply
    1,331.56x = 1,998.38 × 923.57
  4. Step 4: Simplify right side
    1,331.56x = 1,845,636.13
  5. Step 5: Solve for x
    x = 1,845,636.13/1,331.56
  6. Step 6: Final answer
    x = 1,386.07

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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.