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Finding the Fourth Proportional to 9,709.72, 13,394.91 and 5,929.90

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Solution

The fourth proportional to 9,709.72, 13,394.91 and 5,929.90 is: 8,180.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,709.72 : 13,394.91 = 5,929.90 : x
  2. Step 2: Convert to fraction form
    9,709.72/13,394.91 = 5,929.90/x
  3. Step 3: Cross multiply
    9,709.72x = 13,394.91 × 5,929.90
  4. Step 4: Simplify right side
    9,709.72x = 79,430,476.81
  5. Step 5: Solve for x
    x = 79,430,476.81/9,709.72
  6. Step 6: Final answer
    x = 8,180.51

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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.