Home / 1,324.14-1,986.34-666.16

Finding the Fourth Proportional to 1,324.14, 1,986.34 and 666.16

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Solution

The fourth proportional to 1,324.14, 1,986.34 and 666.16 is: 999.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.14 : 1,986.34 = 666.16 : x
  2. Step 2: Convert to fraction form
    1,324.14/1,986.34 = 666.16/x
  3. Step 3: Cross multiply
    1,324.14x = 1,986.34 × 666.16
  4. Step 4: Simplify right side
    1,324.14x = 1,323,220.25
  5. Step 5: Solve for x
    x = 1,323,220.25/1,324.14
  6. Step 6: Final answer
    x = 999.31

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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.