Home / 7,971.96-11,958.06-2,129.40

Finding the Fourth Proportional to 7,971.96, 11,958.06 and 2,129.40

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Solution

The fourth proportional to 7,971.96, 11,958.06 and 2,129.40 is: 3,194.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.96 : 11,958.06 = 2,129.40 : x
  2. Step 2: Convert to fraction form
    7,971.96/11,958.06 = 2,129.40/x
  3. Step 3: Cross multiply
    7,971.96x = 11,958.06 × 2,129.40
  4. Step 4: Simplify right side
    7,971.96x = 25,463,492.96
  5. Step 5: Solve for x
    x = 25,463,492.96/7,971.96
  6. Step 6: Final answer
    x = 3,194.13

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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.