Home / 7,964.11-10,990.84-4,427.38

Finding the Fourth Proportional to 7,964.11, 10,990.84 and 4,427.38

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Solution

The fourth proportional to 7,964.11, 10,990.84 and 4,427.38 is: 6,109.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.11 : 10,990.84 = 4,427.38 : x
  2. Step 2: Convert to fraction form
    7,964.11/10,990.84 = 4,427.38/x
  3. Step 3: Cross multiply
    7,964.11x = 10,990.84 × 4,427.38
  4. Step 4: Simplify right side
    7,964.11x = 48,660,570.25
  5. Step 5: Solve for x
    x = 48,660,570.25/7,964.11
  6. Step 6: Final answer
    x = 6,109.99

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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.