Home / 4,078.67-5,629.90-3,721.87

Finding the Fourth Proportional to 4,078.67, 5,629.90 and 3,721.87

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Solution

The fourth proportional to 4,078.67, 5,629.90 and 3,721.87 is: 5,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.67 : 5,629.90 = 3,721.87 : x
  2. Step 2: Convert to fraction form
    4,078.67/5,629.90 = 3,721.87/x
  3. Step 3: Cross multiply
    4,078.67x = 5,629.90 × 3,721.87
  4. Step 4: Simplify right side
    4,078.67x = 20,953,755.91
  5. Step 5: Solve for x
    x = 20,953,755.91/4,078.67
  6. Step 6: Final answer
    x = 5,137.40

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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.