Home / 3,931.25-5,425.20-2,162.84

Finding the Fourth Proportional to 3,931.25, 5,425.20 and 2,162.84

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Solution

The fourth proportional to 3,931.25, 5,425.20 and 2,162.84 is: 2,984.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.25 : 5,425.20 = 2,162.84 : x
  2. Step 2: Convert to fraction form
    3,931.25/5,425.20 = 2,162.84/x
  3. Step 3: Cross multiply
    3,931.25x = 5,425.20 × 2,162.84
  4. Step 4: Simplify right side
    3,931.25x = 11,733,812.44
  5. Step 5: Solve for x
    x = 11,733,812.44/3,931.25
  6. Step 6: Final answer
    x = 2,984.76

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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.