Home / 7,964.97-10,990.37-4,428.09

Finding the Fourth Proportional to 7,964.97, 10,990.37 and 4,428.09

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Solution

The fourth proportional to 7,964.97, 10,990.37 and 4,428.09 is: 6,110.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.97 : 10,990.37 = 4,428.09 : x
  2. Step 2: Convert to fraction form
    7,964.97/10,990.37 = 4,428.09/x
  3. Step 3: Cross multiply
    7,964.97x = 10,990.37 × 4,428.09
  4. Step 4: Simplify right side
    7,964.97x = 48,666,325.35
  5. Step 5: Solve for x
    x = 48,666,325.35/7,964.97
  6. Step 6: Final answer
    x = 6,110.05

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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.