Home / 3,730.26-5,147.36-2,158.06

Finding the Fourth Proportional to 3,730.26, 5,147.36 and 2,158.06

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Solution

The fourth proportional to 3,730.26, 5,147.36 and 2,158.06 is: 2,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,730.26 : 5,147.36 = 2,158.06 : x
  2. Step 2: Convert to fraction form
    3,730.26/5,147.36 = 2,158.06/x
  3. Step 3: Cross multiply
    3,730.26x = 5,147.36 × 2,158.06
  4. Step 4: Simplify right side
    3,730.26x = 11,108,311.72
  5. Step 5: Solve for x
    x = 11,108,311.72/3,730.26
  6. Step 6: Final answer
    x = 2,977.89

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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.