Home / 7,983.36-11,982.60-4,090.50

Finding the Fourth Proportional to 7,983.36, 11,982.60 and 4,090.50

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Solution

The fourth proportional to 7,983.36, 11,982.60 and 4,090.50 is: 6,139.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.36 : 11,982.60 = 4,090.50 : x
  2. Step 2: Convert to fraction form
    7,983.36/11,982.60 = 4,090.50/x
  3. Step 3: Cross multiply
    7,983.36x = 11,982.60 × 4,090.50
  4. Step 4: Simplify right side
    7,983.36x = 49,014,825.30
  5. Step 5: Solve for x
    x = 49,014,825.30/7,983.36
  6. Step 6: Final answer
    x = 6,139.62

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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.