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Finding the Fourth Proportional to 8,648.19, 11,930.36 and 5,662.71

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Solution

The fourth proportional to 8,648.19, 11,930.36 and 5,662.71 is: 7,811.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.19 : 11,930.36 = 5,662.71 : x
  2. Step 2: Convert to fraction form
    8,648.19/11,930.36 = 5,662.71/x
  3. Step 3: Cross multiply
    8,648.19x = 11,930.36 × 5,662.71
  4. Step 4: Simplify right side
    8,648.19x = 67,558,140.56
  5. Step 5: Solve for x
    x = 67,558,140.56/8,648.19
  6. Step 6: Final answer
    x = 7,811.82

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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.