Home / 7,964.25-10,990.68-4,428.30

Finding the Fourth Proportional to 7,964.25, 10,990.68 and 4,428.30

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Solution

The fourth proportional to 7,964.25, 10,990.68 and 4,428.30 is: 6,111.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.25 : 10,990.68 = 4,428.30 : x
  2. Step 2: Convert to fraction form
    7,964.25/10,990.68 = 4,428.30/x
  3. Step 3: Cross multiply
    7,964.25x = 10,990.68 × 4,428.30
  4. Step 4: Simplify right side
    7,964.25x = 48,670,028.24
  5. Step 5: Solve for x
    x = 48,670,028.24/7,964.25
  6. Step 6: Final answer
    x = 6,111.06

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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.