Home / 7,146.12-10,717.20-2,147.34

Finding the Fourth Proportional to 7,146.12, 10,717.20 and 2,147.34

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Solution

The fourth proportional to 7,146.12, 10,717.20 and 2,147.34 is: 3,220.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.12 : 10,717.20 = 2,147.34 : x
  2. Step 2: Convert to fraction form
    7,146.12/10,717.20 = 2,147.34/x
  3. Step 3: Cross multiply
    7,146.12x = 10,717.20 × 2,147.34
  4. Step 4: Simplify right side
    7,146.12x = 23,013,472.25
  5. Step 5: Solve for x
    x = 23,013,472.25/7,146.12
  6. Step 6: Final answer
    x = 3,220.42

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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.