Home / 3,730.46-5,147.43-2,158.25

Finding the Fourth Proportional to 3,730.46, 5,147.43 and 2,158.25

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Solution

The fourth proportional to 3,730.46, 5,147.43 and 2,158.25 is: 2,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,730.46 : 5,147.43 = 2,158.25 : x
  2. Step 2: Convert to fraction form
    3,730.46/5,147.43 = 2,158.25/x
  3. Step 3: Cross multiply
    3,730.46x = 5,147.43 × 2,158.25
  4. Step 4: Simplify right side
    3,730.46x = 11,109,440.80
  5. Step 5: Solve for x
    x = 11,109,440.80/3,730.46
  6. Step 6: Final answer
    x = 2,978.04

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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.