Home / 5,028.05-6,934.16-3,139.80

Finding the Fourth Proportional to 5,028.05, 6,934.16 and 3,139.80

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Solution

The fourth proportional to 5,028.05, 6,934.16 and 3,139.80 is: 4,330.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028.05 : 6,934.16 = 3,139.80 : x
  2. Step 2: Convert to fraction form
    5,028.05/6,934.16 = 3,139.80/x
  3. Step 3: Cross multiply
    5,028.05x = 6,934.16 × 3,139.80
  4. Step 4: Simplify right side
    5,028.05x = 21,771,859.87
  5. Step 5: Solve for x
    x = 21,771,859.87/5,028.05
  6. Step 6: Final answer
    x = 4,330.08

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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.