Home / 7,222.11-9,966.80-5,450.64

Finding the Fourth Proportional to 7,222.11, 9,966.80 and 5,450.64

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Solution

The fourth proportional to 7,222.11, 9,966.80 and 5,450.64 is: 7,522.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.11 : 9,966.80 = 5,450.64 : x
  2. Step 2: Convert to fraction form
    7,222.11/9,966.80 = 5,450.64/x
  3. Step 3: Cross multiply
    7,222.11x = 9,966.80 × 5,450.64
  4. Step 4: Simplify right side
    7,222.11x = 54,325,440.41
  5. Step 5: Solve for x
    x = 54,325,440.41/7,222.11
  6. Step 6: Final answer
    x = 7,522.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.