Home / 5,139.03-7,706.61-2,507.70

Finding the Fourth Proportional to 5,139.03, 7,706.61 and 2,507.70

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Solution

The fourth proportional to 5,139.03, 7,706.61 and 2,507.70 is: 3,760.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.03 : 7,706.61 = 2,507.70 : x
  2. Step 2: Convert to fraction form
    5,139.03/7,706.61 = 2,507.70/x
  3. Step 3: Cross multiply
    5,139.03x = 7,706.61 × 2,507.70
  4. Step 4: Simplify right side
    5,139.03x = 19,325,865.90
  5. Step 5: Solve for x
    x = 19,325,865.90/5,139.03
  6. Step 6: Final answer
    x = 3,760.61

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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.