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Finding the Fourth Proportional to 5,699.56, 7,865.56 and 3,181.58

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Solution

The fourth proportional to 5,699.56, 7,865.56 and 3,181.58 is: 4,390.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,699.56 : 7,865.56 = 3,181.58 : x
  2. Step 2: Convert to fraction form
    5,699.56/7,865.56 = 3,181.58/x
  3. Step 3: Cross multiply
    5,699.56x = 7,865.56 × 3,181.58
  4. Step 4: Simplify right side
    5,699.56x = 25,024,908.38
  5. Step 5: Solve for x
    x = 25,024,908.38/5,699.56
  6. Step 6: Final answer
    x = 4,390.67

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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.