Home / 3,425.03-5,139.78-3,146.20

Finding the Fourth Proportional to 3,425.03, 5,139.78 and 3,146.20

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Solution

The fourth proportional to 3,425.03, 5,139.78 and 3,146.20 is: 4,721.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.03 : 5,139.78 = 3,146.20 : x
  2. Step 2: Convert to fraction form
    3,425.03/5,139.78 = 3,146.20/x
  3. Step 3: Cross multiply
    3,425.03x = 5,139.78 × 3,146.20
  4. Step 4: Simplify right side
    3,425.03x = 16,170,775.84
  5. Step 5: Solve for x
    x = 16,170,775.84/3,425.03
  6. Step 6: Final answer
    x = 4,721.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.