Home / 7,768.46-10,720.14-4,231.60

Finding the Fourth Proportional to 7,768.46, 10,720.14 and 4,231.60

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Solution

The fourth proportional to 7,768.46, 10,720.14 and 4,231.60 is: 5,839.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.46 : 10,720.14 = 4,231.60 : x
  2. Step 2: Convert to fraction form
    7,768.46/10,720.14 = 4,231.60/x
  3. Step 3: Cross multiply
    7,768.46x = 10,720.14 × 4,231.60
  4. Step 4: Simplify right side
    7,768.46x = 45,363,344.42
  5. Step 5: Solve for x
    x = 45,363,344.42/7,768.46
  6. Step 6: Final answer
    x = 5,839.43

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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.