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Finding the Fourth Proportional to 6,486.64, 8,951.79 and 3,836.32

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Solution

The fourth proportional to 6,486.64, 8,951.79 and 3,836.32 is: 5,294.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,486.64 : 8,951.79 = 3,836.32 : x
  2. Step 2: Convert to fraction form
    6,486.64/8,951.79 = 3,836.32/x
  3. Step 3: Cross multiply
    6,486.64x = 8,951.79 × 3,836.32
  4. Step 4: Simplify right side
    6,486.64x = 34,341,943.80
  5. Step 5: Solve for x
    x = 34,341,943.80/6,486.64
  6. Step 6: Final answer
    x = 5,294.26

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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.