Home / 7,964.40-11,946.60-7,906.80

Finding the Fourth Proportional to 7,964.40, 11,946.60 and 7,906.80

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Solution

The fourth proportional to 7,964.40, 11,946.60 and 7,906.80 is: 11,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.40 : 11,946.60 = 7,906.80 : x
  2. Step 2: Convert to fraction form
    7,964.40/11,946.60 = 7,906.80/x
  3. Step 3: Cross multiply
    7,964.40x = 11,946.60 × 7,906.80
  4. Step 4: Simplify right side
    7,964.40x = 94,459,376.88
  5. Step 5: Solve for x
    x = 94,459,376.88/7,964.40
  6. Step 6: Final answer
    x = 11,860.20

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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.