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Finding the Fourth Proportional to 8,809.10, 13,215.90 and 5,104.70

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Solution

The fourth proportional to 8,809.10, 13,215.90 and 5,104.70 is: 7,658.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.10 : 13,215.90 = 5,104.70 : x
  2. Step 2: Convert to fraction form
    8,809.10/13,215.90 = 5,104.70/x
  3. Step 3: Cross multiply
    8,809.10x = 13,215.90 × 5,104.70
  4. Step 4: Simplify right side
    8,809.10x = 67,463,204.73
  5. Step 5: Solve for x
    x = 67,463,204.73/8,809.10
  6. Step 6: Final answer
    x = 7,658.35

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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.