Home / 5,028.38-6,938.34-3,139.64

Finding the Fourth Proportional to 5,028.38, 6,938.34 and 3,139.64

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Solution

The fourth proportional to 5,028.38, 6,938.34 and 3,139.64 is: 4,332.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028.38 : 6,938.34 = 3,139.64 : x
  2. Step 2: Convert to fraction form
    5,028.38/6,938.34 = 3,139.64/x
  3. Step 3: Cross multiply
    5,028.38x = 6,938.34 × 3,139.64
  4. Step 4: Simplify right side
    5,028.38x = 21,783,889.80
  5. Step 5: Solve for x
    x = 21,783,889.80/5,028.38
  6. Step 6: Final answer
    x = 4,332.19

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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.