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Finding the Fourth Proportional to 5,865.65, 8,096.79 and 3,878.90

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Solution

The fourth proportional to 5,865.65, 8,096.79 and 3,878.90 is: 5,354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,865.65 : 8,096.79 = 3,878.90 : x
  2. Step 2: Convert to fraction form
    5,865.65/8,096.79 = 3,878.90/x
  3. Step 3: Cross multiply
    5,865.65x = 8,096.79 × 3,878.90
  4. Step 4: Simplify right side
    5,865.65x = 31,406,638.73
  5. Step 5: Solve for x
    x = 31,406,638.73/5,865.65
  6. Step 6: Final answer
    x = 5,354.34

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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.