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Finding the Fourth Proportional to 7,103.66, 9,803.09 and 3,960.05

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Solution

The fourth proportional to 7,103.66, 9,803.09 and 3,960.05 is: 5,464.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,103.66 : 9,803.09 = 3,960.05 : x
  2. Step 2: Convert to fraction form
    7,103.66/9,803.09 = 3,960.05/x
  3. Step 3: Cross multiply
    7,103.66x = 9,803.09 × 3,960.05
  4. Step 4: Simplify right side
    7,103.66x = 38,820,687.44
  5. Step 5: Solve for x
    x = 38,820,687.44/7,103.66
  6. Step 6: Final answer
    x = 5,464.89

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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.