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Finding the Fourth Proportional to 9,917.96, 13,687.50 and 5,668.92

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Solution

The fourth proportional to 9,917.96, 13,687.50 and 5,668.92 is: 7,823.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,917.96 : 13,687.50 = 5,668.92 : x
  2. Step 2: Convert to fraction form
    9,917.96/13,687.50 = 5,668.92/x
  3. Step 3: Cross multiply
    9,917.96x = 13,687.50 × 5,668.92
  4. Step 4: Simplify right side
    9,917.96x = 77,593,342.50
  5. Step 5: Solve for x
    x = 77,593,342.50/9,917.96
  6. Step 6: Final answer
    x = 7,823.52

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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.