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Finding the Fourth Proportional to 6,485.67, 8,951.45 and 5,169.69

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Solution

The fourth proportional to 6,485.67, 8,951.45 and 5,169.69 is: 7,135.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.67 : 8,951.45 = 5,169.69 : x
  2. Step 2: Convert to fraction form
    6,485.67/8,951.45 = 5,169.69/x
  3. Step 3: Cross multiply
    6,485.67x = 8,951.45 × 5,169.69
  4. Step 4: Simplify right side
    6,485.67x = 46,276,195.70
  5. Step 5: Solve for x
    x = 46,276,195.70/6,485.67
  6. Step 6: Final answer
    x = 7,135.14

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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.