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Finding the Fourth Proportional to 8,866.90, 13,288.20 and 6,266.80

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Solution

The fourth proportional to 8,866.90, 13,288.20 and 6,266.80 is: 9,391.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.90 : 13,288.20 = 6,266.80 : x
  2. Step 2: Convert to fraction form
    8,866.90/13,288.20 = 6,266.80/x
  3. Step 3: Cross multiply
    8,866.90x = 13,288.20 × 6,266.80
  4. Step 4: Simplify right side
    8,866.90x = 83,274,491.76
  5. Step 5: Solve for x
    x = 83,274,491.76/8,866.90
  6. Step 6: Final answer
    x = 9,391.61

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1.5x scale

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.