Home / 7,912.80-10,919.88-4,556.79

Finding the Fourth Proportional to 7,912.80, 10,919.88 and 4,556.79

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Solution

The fourth proportional to 7,912.80, 10,919.88 and 4,556.79 is: 6,288.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.80 : 10,919.88 = 4,556.79 : x
  2. Step 2: Convert to fraction form
    7,912.80/10,919.88 = 4,556.79/x
  3. Step 3: Cross multiply
    7,912.80x = 10,919.88 × 4,556.79
  4. Step 4: Simplify right side
    7,912.80x = 49,759,599.99
  5. Step 5: Solve for x
    x = 49,759,599.99/7,912.80
  6. Step 6: Final answer
    x = 6,288.49

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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.