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Finding the Fourth Proportional to 6,520.95, 9,002.79 and 4,286.79

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Solution

The fourth proportional to 6,520.95, 9,002.79 and 4,286.79 is: 5,918.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520.95 : 9,002.79 = 4,286.79 : x
  2. Step 2: Convert to fraction form
    6,520.95/9,002.79 = 4,286.79/x
  3. Step 3: Cross multiply
    6,520.95x = 9,002.79 × 4,286.79
  4. Step 4: Simplify right side
    6,520.95x = 38,593,070.14
  5. Step 5: Solve for x
    x = 38,593,070.14/6,520.95
  6. Step 6: Final answer
    x = 5,918.32

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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.