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Finding the Fourth Proportional to 8,871.26, 13,315.08 and 4,491.80

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Solution

The fourth proportional to 8,871.26, 13,315.08 and 4,491.80 is: 6,741.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.26 : 13,315.08 = 4,491.80 : x
  2. Step 2: Convert to fraction form
    8,871.26/13,315.08 = 4,491.80/x
  3. Step 3: Cross multiply
    8,871.26x = 13,315.08 × 4,491.80
  4. Step 4: Simplify right side
    8,871.26x = 59,808,676.34
  5. Step 5: Solve for x
    x = 59,808,676.34/8,871.26
  6. Step 6: Final answer
    x = 6,741.85

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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.