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Finding the Fourth Proportional to 5,419.53, 7,479.80 and 3,295.72

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Solution

The fourth proportional to 5,419.53, 7,479.80 and 3,295.72 is: 4,548.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.53 : 7,479.80 = 3,295.72 : x
  2. Step 2: Convert to fraction form
    5,419.53/7,479.80 = 3,295.72/x
  3. Step 3: Cross multiply
    5,419.53x = 7,479.80 × 3,295.72
  4. Step 4: Simplify right side
    5,419.53x = 24,651,326.46
  5. Step 5: Solve for x
    x = 24,651,326.46/5,419.53
  6. Step 6: Final answer
    x = 4,548.61

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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.