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Finding the Fourth Proportional to 6,311.92, 8,710.84 and 3,479.28

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Solution

The fourth proportional to 6,311.92, 8,710.84 and 3,479.28 is: 4,801.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,311.92 : 8,710.84 = 3,479.28 : x
  2. Step 2: Convert to fraction form
    6,311.92/8,710.84 = 3,479.28/x
  3. Step 3: Cross multiply
    6,311.92x = 8,710.84 × 3,479.28
  4. Step 4: Simplify right side
    6,311.92x = 30,307,451.40
  5. Step 5: Solve for x
    x = 30,307,451.40/6,311.92
  6. Step 6: Final answer
    x = 4,801.62

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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.