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Finding the Fourth Proportional to 8,681.86, 13,001.99 and 8,245.91

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Solution

The fourth proportional to 8,681.86, 13,001.99 and 8,245.91 is: 12,349.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.86 : 13,001.99 = 8,245.91 : x
  2. Step 2: Convert to fraction form
    8,681.86/13,001.99 = 8,245.91/x
  3. Step 3: Cross multiply
    8,681.86x = 13,001.99 × 8,245.91
  4. Step 4: Simplify right side
    8,681.86x = 107,213,292.48
  5. Step 5: Solve for x
    x = 107,213,292.48/8,681.86
  6. Step 6: Final answer
    x = 12,349.12

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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.