Home / 7,117.75-10,675.68-2,120.03

Finding the Fourth Proportional to 7,117.75, 10,675.68 and 2,120.03

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Solution

The fourth proportional to 7,117.75, 10,675.68 and 2,120.03 is: 3,179.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.75 : 10,675.68 = 2,120.03 : x
  2. Step 2: Convert to fraction form
    7,117.75/10,675.68 = 2,120.03/x
  3. Step 3: Cross multiply
    7,117.75x = 10,675.68 × 2,120.03
  4. Step 4: Simplify right side
    7,117.75x = 22,632,740.58
  5. Step 5: Solve for x
    x = 22,632,740.58/7,117.75
  6. Step 6: Final answer
    x = 3,179.76

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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.