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Finding the Fourth Proportional to 8,448.06, 12,699.42 and 7,839.35

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Solution

The fourth proportional to 8,448.06, 12,699.42 and 7,839.35 is: 11,784.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,448.06 : 12,699.42 = 7,839.35 : x
  2. Step 2: Convert to fraction form
    8,448.06/12,699.42 = 7,839.35/x
  3. Step 3: Cross multiply
    8,448.06x = 12,699.42 × 7,839.35
  4. Step 4: Simplify right side
    8,448.06x = 99,555,152.91
  5. Step 5: Solve for x
    x = 99,555,152.91/8,448.06
  6. Step 6: Final answer
    x = 11,784.38

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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.