Home / 7,972.40-11,958.60-2,777.06

Finding the Fourth Proportional to 7,972.40, 11,958.60 and 2,777.06

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Solution

The fourth proportional to 7,972.40, 11,958.60 and 2,777.06 is: 4,165.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.40 : 11,958.60 = 2,777.06 : x
  2. Step 2: Convert to fraction form
    7,972.40/11,958.60 = 2,777.06/x
  3. Step 3: Cross multiply
    7,972.40x = 11,958.60 × 2,777.06
  4. Step 4: Simplify right side
    7,972.40x = 33,209,749.72
  5. Step 5: Solve for x
    x = 33,209,749.72/7,972.40
  6. Step 6: Final answer
    x = 4,165.59

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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.