Home / 3,956.10-5,459.21-2,187.60

Finding the Fourth Proportional to 3,956.10, 5,459.21 and 2,187.60

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Solution

The fourth proportional to 3,956.10, 5,459.21 and 2,187.60 is: 3,018.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.10 : 5,459.21 = 2,187.60 : x
  2. Step 2: Convert to fraction form
    3,956.10/5,459.21 = 2,187.60/x
  3. Step 3: Cross multiply
    3,956.10x = 5,459.21 × 2,187.60
  4. Step 4: Simplify right side
    3,956.10x = 11,942,556.86
  5. Step 5: Solve for x
    x = 11,942,556.86/3,956.10
  6. Step 6: Final answer
    x = 3,018.77

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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.