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Finding the Fourth Proportional to 5,671.12, 7,827.04 and 3,314.64

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Solution

The fourth proportional to 5,671.12, 7,827.04 and 3,314.64 is: 4,574.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,671.12 : 7,827.04 = 3,314.64 : x
  2. Step 2: Convert to fraction form
    5,671.12/7,827.04 = 3,314.64/x
  3. Step 3: Cross multiply
    5,671.12x = 7,827.04 × 3,314.64
  4. Step 4: Simplify right side
    5,671.12x = 25,943,819.87
  5. Step 5: Solve for x
    x = 25,943,819.87/5,671.12
  6. Step 6: Final answer
    x = 4,574.73

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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.