Home / 2,620.08-3,931.74-1,777.68

Finding the Fourth Proportional to 2,620.08, 3,931.74 and 1,777.68

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Solution

The fourth proportional to 2,620.08, 3,931.74 and 1,777.68 is: 2,667.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.08 : 3,931.74 = 1,777.68 : x
  2. Step 2: Convert to fraction form
    2,620.08/3,931.74 = 1,777.68/x
  3. Step 3: Cross multiply
    2,620.08x = 3,931.74 × 1,777.68
  4. Step 4: Simplify right side
    2,620.08x = 6,989,375.56
  5. Step 5: Solve for x
    x = 6,989,375.56/2,620.08
  6. Step 6: Final answer
    x = 2,667.62

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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.