Home / 4,179.42-5,766.15-2,688.21

Finding the Fourth Proportional to 4,179.42, 5,766.15 and 2,688.21

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Solution

The fourth proportional to 4,179.42, 5,766.15 and 2,688.21 is: 3,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,179.42 : 5,766.15 = 2,688.21 : x
  2. Step 2: Convert to fraction form
    4,179.42/5,766.15 = 2,688.21/x
  3. Step 3: Cross multiply
    4,179.42x = 5,766.15 × 2,688.21
  4. Step 4: Simplify right side
    4,179.42x = 15,500,622.09
  5. Step 5: Solve for x
    x = 15,500,622.09/4,179.42
  6. Step 6: Final answer
    x = 3,708.80

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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.