Home / 7,102.73-10,655.62-2,172.21

Finding the Fourth Proportional to 7,102.73, 10,655.62 and 2,172.21

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Solution

The fourth proportional to 7,102.73, 10,655.62 and 2,172.21 is: 3,258.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,102.73 : 10,655.62 = 2,172.21 : x
  2. Step 2: Convert to fraction form
    7,102.73/10,655.62 = 2,172.21/x
  3. Step 3: Cross multiply
    7,102.73x = 10,655.62 × 2,172.21
  4. Step 4: Simplify right side
    7,102.73x = 23,146,244.32
  5. Step 5: Solve for x
    x = 23,146,244.32/7,102.73
  6. Step 6: Final answer
    x = 3,258.78

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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.