Home / 5,121.12-7,066.08-3,132.12

Finding the Fourth Proportional to 5,121.12, 7,066.08 and 3,132.12

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Solution

The fourth proportional to 5,121.12, 7,066.08 and 3,132.12 is: 4,321.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.12 : 7,066.08 = 3,132.12 : x
  2. Step 2: Convert to fraction form
    5,121.12/7,066.08 = 3,132.12/x
  3. Step 3: Cross multiply
    5,121.12x = 7,066.08 × 3,132.12
  4. Step 4: Simplify right side
    5,121.12x = 22,131,810.49
  5. Step 5: Solve for x
    x = 22,131,810.49/5,121.12
  6. Step 6: Final answer
    x = 4,321.67

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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.