Home / 7,240.72-10,860.87-3,078.64

Finding the Fourth Proportional to 7,240.72, 10,860.87 and 3,078.64

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Solution

The fourth proportional to 7,240.72, 10,860.87 and 3,078.64 is: 4,617.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240.72 : 10,860.87 = 3,078.64 : x
  2. Step 2: Convert to fraction form
    7,240.72/10,860.87 = 3,078.64/x
  3. Step 3: Cross multiply
    7,240.72x = 10,860.87 × 3,078.64
  4. Step 4: Simplify right side
    7,240.72x = 33,436,708.82
  5. Step 5: Solve for x
    x = 33,436,708.82/7,240.72
  6. Step 6: Final answer
    x = 4,617.87

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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.