Home / 3,977.55-5,489.45-2,276.21

Finding the Fourth Proportional to 3,977.55, 5,489.45 and 2,276.21

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Solution

The fourth proportional to 3,977.55, 5,489.45 and 2,276.21 is: 3,141.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.55 : 5,489.45 = 2,276.21 : x
  2. Step 2: Convert to fraction form
    3,977.55/5,489.45 = 2,276.21/x
  3. Step 3: Cross multiply
    3,977.55x = 5,489.45 × 2,276.21
  4. Step 4: Simplify right side
    3,977.55x = 12,495,163.24
  5. Step 5: Solve for x
    x = 12,495,163.24/3,977.55
  6. Step 6: Final answer
    x = 3,141.42

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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.