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Finding the Fourth Proportional to 6,215.38, 9,312.14 and 5,845.42

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Solution

The fourth proportional to 6,215.38, 9,312.14 and 5,845.42 is: 8,757.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,215.38 : 9,312.14 = 5,845.42 : x
  2. Step 2: Convert to fraction form
    6,215.38/9,312.14 = 5,845.42/x
  3. Step 3: Cross multiply
    6,215.38x = 9,312.14 × 5,845.42
  4. Step 4: Simplify right side
    6,215.38x = 54,433,369.40
  5. Step 5: Solve for x
    x = 54,433,369.40/6,215.38
  6. Step 6: Final answer
    x = 8,757.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.