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Finding the Fourth Proportional to 7,757.78, 10,704.15 and 7,491.08

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Solution

The fourth proportional to 7,757.78, 10,704.15 and 7,491.08 is: 10,336.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,757.78 : 10,704.15 = 7,491.08 : x
  2. Step 2: Convert to fraction form
    7,757.78/10,704.15 = 7,491.08/x
  3. Step 3: Cross multiply
    7,757.78x = 10,704.15 × 7,491.08
  4. Step 4: Simplify right side
    7,757.78x = 80,185,670.74
  5. Step 5: Solve for x
    x = 80,185,670.74/7,757.78
  6. Step 6: Final answer
    x = 10,336.17

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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.