Home / 7,926.89-11,890.85-2,662.40

Finding the Fourth Proportional to 7,926.89, 11,890.85 and 2,662.40

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Solution

The fourth proportional to 7,926.89, 11,890.85 and 2,662.40 is: 3,993.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,926.89 : 11,890.85 = 2,662.40 : x
  2. Step 2: Convert to fraction form
    7,926.89/11,890.85 = 2,662.40/x
  3. Step 3: Cross multiply
    7,926.89x = 11,890.85 × 2,662.40
  4. Step 4: Simplify right side
    7,926.89x = 31,658,215.46
  5. Step 5: Solve for x
    x = 31,658,215.46/7,926.89
  6. Step 6: Final answer
    x = 3,993.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.