Home / 3,730.45-5,147.62-2,158.25

Finding the Fourth Proportional to 3,730.45, 5,147.62 and 2,158.25

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Solution

The fourth proportional to 3,730.45, 5,147.62 and 2,158.25 is: 2,978.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,730.45 : 5,147.62 = 2,158.25 : x
  2. Step 2: Convert to fraction form
    3,730.45/5,147.62 = 2,158.25/x
  3. Step 3: Cross multiply
    3,730.45x = 5,147.62 × 2,158.25
  4. Step 4: Simplify right side
    3,730.45x = 11,109,840.07
  5. Step 5: Solve for x
    x = 11,109,840.07/3,730.45
  6. Step 6: Final answer
    x = 2,978.15

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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.