Home / 7,964.40-10,991.15-4,379.63

Finding the Fourth Proportional to 7,964.40, 10,991.15 and 4,379.63

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Solution

The fourth proportional to 7,964.40, 10,991.15 and 4,379.63 is: 6,044.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.40 : 10,991.15 = 4,379.63 : x
  2. Step 2: Convert to fraction form
    7,964.40/10,991.15 = 4,379.63/x
  3. Step 3: Cross multiply
    7,964.40x = 10,991.15 × 4,379.63
  4. Step 4: Simplify right side
    7,964.40x = 48,137,093.42
  5. Step 5: Solve for x
    x = 48,137,093.42/7,964.40
  6. Step 6: Final answer
    x = 6,044.04

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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.