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Finding the Fourth Proportional to 6,485.94, 9,728.96 and 2,103.39

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Solution

The fourth proportional to 6,485.94, 9,728.96 and 2,103.39 is: 3,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.94 : 9,728.96 = 2,103.39 : x
  2. Step 2: Convert to fraction form
    6,485.94/9,728.96 = 2,103.39/x
  3. Step 3: Cross multiply
    6,485.94x = 9,728.96 × 2,103.39
  4. Step 4: Simplify right side
    6,485.94x = 20,463,797.17
  5. Step 5: Solve for x
    x = 20,463,797.17/6,485.94
  6. Step 6: Final answer
    x = 3,155.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.