Home / 3,931.28-5,427.78-3,033.38

Finding the Fourth Proportional to 3,931.28, 5,427.78 and 3,033.38

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Solution

The fourth proportional to 3,931.28, 5,427.78 and 3,033.38 is: 4,188.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.28 : 5,427.78 = 3,033.38 : x
  2. Step 2: Convert to fraction form
    3,931.28/5,427.78 = 3,033.38/x
  3. Step 3: Cross multiply
    3,931.28x = 5,427.78 × 3,033.38
  4. Step 4: Simplify right side
    3,931.28x = 16,464,519.30
  5. Step 5: Solve for x
    x = 16,464,519.30/3,931.28
  6. Step 6: Final answer
    x = 4,188.08

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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.