Home / 2,615-3,921.72-1,226.92

Finding the Fourth Proportional to 2,615, 3,921.72 and 1,226.92

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Solution

The fourth proportional to 2,615, 3,921.72 and 1,226.92 is: 1,840.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615 : 3,921.72 = 1,226.92 : x
  2. Step 2: Convert to fraction form
    2,615/3,921.72 = 1,226.92/x
  3. Step 3: Cross multiply
    2,615x = 3,921.72 × 1,226.92
  4. Step 4: Simplify right side
    2,615x = 4,811,636.70
  5. Step 5: Solve for x
    x = 4,811,636.70/2,615
  6. Step 6: Final answer
    x = 1,840.01

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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.