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Finding the Fourth Proportional to 5,815.64, 8,027.34 and 3,953.72

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Solution

The fourth proportional to 5,815.64, 8,027.34 and 3,953.72 is: 5,457.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.64 : 8,027.34 = 3,953.72 : x
  2. Step 2: Convert to fraction form
    5,815.64/8,027.34 = 3,953.72/x
  3. Step 3: Cross multiply
    5,815.64x = 8,027.34 × 3,953.72
  4. Step 4: Simplify right side
    5,815.64x = 31,737,854.70
  5. Step 5: Solve for x
    x = 31,737,854.70/5,815.64
  6. Step 6: Final answer
    x = 5,457.33

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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.