Home / 7,768.12-10,719.94-4,231.30

Finding the Fourth Proportional to 7,768.12, 10,719.94 and 4,231.30

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Solution

The fourth proportional to 7,768.12, 10,719.94 and 4,231.30 is: 5,839.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.12 : 10,719.94 = 4,231.30 : x
  2. Step 2: Convert to fraction form
    7,768.12/10,719.94 = 4,231.30/x
  3. Step 3: Cross multiply
    7,768.12x = 10,719.94 × 4,231.30
  4. Step 4: Simplify right side
    7,768.12x = 45,359,282.12
  5. Step 5: Solve for x
    x = 45,359,282.12/7,768.12
  6. Step 6: Final answer
    x = 5,839.16

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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.