Home / 7,964.94-10,991.40-4,428.06

Finding the Fourth Proportional to 7,964.94, 10,991.40 and 4,428.06

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Solution

The fourth proportional to 7,964.94, 10,991.40 and 4,428.06 is: 6,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.94 : 10,991.40 = 4,428.06 : x
  2. Step 2: Convert to fraction form
    7,964.94/10,991.40 = 4,428.06/x
  3. Step 3: Cross multiply
    7,964.94x = 10,991.40 × 4,428.06
  4. Step 4: Simplify right side
    7,964.94x = 48,670,578.68
  5. Step 5: Solve for x
    x = 48,670,578.68/7,964.94
  6. Step 6: Final answer
    x = 6,110.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.