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Finding the Fourth Proportional to 8,308.98, 11,515.91 and 8,153.46

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Solution

The fourth proportional to 8,308.98, 11,515.91 and 8,153.46 is: 11,300.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.98 : 11,515.91 = 8,153.46 : x
  2. Step 2: Convert to fraction form
    8,308.98/11,515.91 = 8,153.46/x
  3. Step 3: Cross multiply
    8,308.98x = 11,515.91 × 8,153.46
  4. Step 4: Simplify right side
    8,308.98x = 93,894,470.78
  5. Step 5: Solve for x
    x = 93,894,470.78/8,308.98
  6. Step 6: Final answer
    x = 11,300.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.