Home / 3,115.63-4,299.24-1,771.21

Finding the Fourth Proportional to 3,115.63, 4,299.24 and 1,771.21

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Solution

The fourth proportional to 3,115.63, 4,299.24 and 1,771.21 is: 2,444.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.63 : 4,299.24 = 1,771.21 : x
  2. Step 2: Convert to fraction form
    3,115.63/4,299.24 = 1,771.21/x
  3. Step 3: Cross multiply
    3,115.63x = 4,299.24 × 1,771.21
  4. Step 4: Simplify right side
    3,115.63x = 7,614,856.88
  5. Step 5: Solve for x
    x = 7,614,856.88/3,115.63
  6. Step 6: Final answer
    x = 2,444.08

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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.