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Finding the Fourth Proportional to 8,757.88, 13,152.48 and 8,405.52

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Solution

The fourth proportional to 8,757.88, 13,152.48 and 8,405.52 is: 12,623.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.88 : 13,152.48 = 8,405.52 : x
  2. Step 2: Convert to fraction form
    8,757.88/13,152.48 = 8,405.52/x
  3. Step 3: Cross multiply
    8,757.88x = 13,152.48 × 8,405.52
  4. Step 4: Simplify right side
    8,757.88x = 110,553,433.69
  5. Step 5: Solve for x
    x = 110,553,433.69/8,757.88
  6. Step 6: Final answer
    x = 12,623.31

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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.