Home / 3,720.54-5,134.38-2,148.60

Finding the Fourth Proportional to 3,720.54, 5,134.38 and 2,148.60

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Solution

The fourth proportional to 3,720.54, 5,134.38 and 2,148.60 is: 2,965.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.54 : 5,134.38 = 2,148.60 : x
  2. Step 2: Convert to fraction form
    3,720.54/5,134.38 = 2,148.60/x
  3. Step 3: Cross multiply
    3,720.54x = 5,134.38 × 2,148.60
  4. Step 4: Simplify right side
    3,720.54x = 11,031,728.87
  5. Step 5: Solve for x
    x = 11,031,728.87/3,720.54
  6. Step 6: Final answer
    x = 2,965.09

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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.