Home / 7,208.78-10,815.39-4,087.82

Finding the Fourth Proportional to 7,208.78, 10,815.39 and 4,087.82

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Solution

The fourth proportional to 7,208.78, 10,815.39 and 4,087.82 is: 6,132.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208.78 : 10,815.39 = 4,087.82 : x
  2. Step 2: Convert to fraction form
    7,208.78/10,815.39 = 4,087.82/x
  3. Step 3: Cross multiply
    7,208.78x = 10,815.39 × 4,087.82
  4. Step 4: Simplify right side
    7,208.78x = 44,211,367.55
  5. Step 5: Solve for x
    x = 44,211,367.55/7,208.78
  6. Step 6: Final answer
    x = 6,132.99

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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.