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Finding the Fourth Proportional to 5,648.82, 8,479.53 and 3,311.58

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Solution

The fourth proportional to 5,648.82, 8,479.53 and 3,311.58 is: 4,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,648.82 : 8,479.53 = 3,311.58 : x
  2. Step 2: Convert to fraction form
    5,648.82/8,479.53 = 3,311.58/x
  3. Step 3: Cross multiply
    5,648.82x = 8,479.53 × 3,311.58
  4. Step 4: Simplify right side
    5,648.82x = 28,080,641.96
  5. Step 5: Solve for x
    x = 28,080,641.96/5,648.82
  6. Step 6: Final answer
    x = 4,971.06

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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.