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Finding the Fourth Proportional to 5,308.83, 7,994.11 and 3,931.94

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Solution

The fourth proportional to 5,308.83, 7,994.11 and 3,931.94 is: 5,920.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,308.83 : 7,994.11 = 3,931.94 : x
  2. Step 2: Convert to fraction form
    5,308.83/7,994.11 = 3,931.94/x
  3. Step 3: Cross multiply
    5,308.83x = 7,994.11 × 3,931.94
  4. Step 4: Simplify right side
    5,308.83x = 31,432,311.07
  5. Step 5: Solve for x
    x = 31,432,311.07/5,308.83
  6. Step 6: Final answer
    x = 5,920.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.