Home / 7,964.56-10,991.19-4,428.10

Finding the Fourth Proportional to 7,964.56, 10,991.19 and 4,428.10

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Solution

The fourth proportional to 7,964.56, 10,991.19 and 4,428.10 is: 6,110.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.56 : 10,991.19 = 4,428.10 : x
  2. Step 2: Convert to fraction form
    7,964.56/10,991.19 = 4,428.10/x
  3. Step 3: Cross multiply
    7,964.56x = 10,991.19 × 4,428.10
  4. Step 4: Simplify right side
    7,964.56x = 48,670,088.44
  5. Step 5: Solve for x
    x = 48,670,088.44/7,964.56
  6. Step 6: Final answer
    x = 6,110.83

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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.