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Finding the Fourth Proportional to 8,859.72, 13,260.72 and 6,519.15

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Solution

The fourth proportional to 8,859.72, 13,260.72 and 6,519.15 is: 9,757.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.72 : 13,260.72 = 6,519.15 : x
  2. Step 2: Convert to fraction form
    8,859.72/13,260.72 = 6,519.15/x
  3. Step 3: Cross multiply
    8,859.72x = 13,260.72 × 6,519.15
  4. Step 4: Simplify right side
    8,859.72x = 86,448,622.79
  5. Step 5: Solve for x
    x = 86,448,622.79/8,859.72
  6. Step 6: Final answer
    x = 9,757.49

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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.