Home / 7,989.49-11,984.96-2,146.06

Finding the Fourth Proportional to 7,989.49, 11,984.96 and 2,146.06

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Solution

The fourth proportional to 7,989.49, 11,984.96 and 2,146.06 is: 3,219.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.49 : 11,984.96 = 2,146.06 : x
  2. Step 2: Convert to fraction form
    7,989.49/11,984.96 = 2,146.06/x
  3. Step 3: Cross multiply
    7,989.49x = 11,984.96 × 2,146.06
  4. Step 4: Simplify right side
    7,989.49x = 25,720,443.26
  5. Step 5: Solve for x
    x = 25,720,443.26/7,989.49
  6. Step 6: Final answer
    x = 3,219.28

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1.5x scale

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.