Home / 7,906.33-11,855.47-2,639.45

Finding the Fourth Proportional to 7,906.33, 11,855.47 and 2,639.45

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Solution

The fourth proportional to 7,906.33, 11,855.47 and 2,639.45 is: 3,957.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,906.33 : 11,855.47 = 2,639.45 : x
  2. Step 2: Convert to fraction form
    7,906.33/11,855.47 = 2,639.45/x
  3. Step 3: Cross multiply
    7,906.33x = 11,855.47 × 2,639.45
  4. Step 4: Simplify right side
    7,906.33x = 31,291,888.99
  5. Step 5: Solve for x
    x = 31,291,888.99/7,906.33
  6. Step 6: Final answer
    x = 3,957.83

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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.