Home / 7,964.13-10,990.78-4,379.36

Finding the Fourth Proportional to 7,964.13, 10,990.78 and 4,379.36

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Solution

The fourth proportional to 7,964.13, 10,990.78 and 4,379.36 is: 6,043.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.13 : 10,990.78 = 4,379.36 : x
  2. Step 2: Convert to fraction form
    7,964.13/10,990.78 = 4,379.36/x
  3. Step 3: Cross multiply
    7,964.13x = 10,990.78 × 4,379.36
  4. Step 4: Simplify right side
    7,964.13x = 48,132,594.64
  5. Step 5: Solve for x
    x = 48,132,594.64/7,964.13
  6. Step 6: Final answer
    x = 6,043.67

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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.