Home / 7,146.09-10,720.67-2,215.62

Finding the Fourth Proportional to 7,146.09, 10,720.67 and 2,215.62

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Solution

The fourth proportional to 7,146.09, 10,720.67 and 2,215.62 is: 3,323.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.09 : 10,720.67 = 2,215.62 : x
  2. Step 2: Convert to fraction form
    7,146.09/10,720.67 = 2,215.62/x
  3. Step 3: Cross multiply
    7,146.09x = 10,720.67 × 2,215.62
  4. Step 4: Simplify right side
    7,146.09x = 23,752,919.79
  5. Step 5: Solve for x
    x = 23,752,919.79/7,146.09
  6. Step 6: Final answer
    x = 3,323.90

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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.