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Finding the Fourth Proportional to 8,765.36, 13,140.22 and 3,217.41

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Solution

The fourth proportional to 8,765.36, 13,140.22 and 3,217.41 is: 4,823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.36 : 13,140.22 = 3,217.41 : x
  2. Step 2: Convert to fraction form
    8,765.36/13,140.22 = 3,217.41/x
  3. Step 3: Cross multiply
    8,765.36x = 13,140.22 × 3,217.41
  4. Step 4: Simplify right side
    8,765.36x = 42,277,475.23
  5. Step 5: Solve for x
    x = 42,277,475.23/8,765.36
  6. Step 6: Final answer
    x = 4,823.24

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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.