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Finding the Fourth Proportional to 7,771.68, 10,724.88 and 4,234.89

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Solution

The fourth proportional to 7,771.68, 10,724.88 and 4,234.89 is: 5,844.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.68 : 10,724.88 = 4,234.89 : x
  2. Step 2: Convert to fraction form
    7,771.68/10,724.88 = 4,234.89/x
  3. Step 3: Cross multiply
    7,771.68x = 10,724.88 × 4,234.89
  4. Step 4: Simplify right side
    7,771.68x = 45,418,687.06
  5. Step 5: Solve for x
    x = 45,418,687.06/7,771.68
  6. Step 6: Final answer
    x = 5,844.13

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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.