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Finding the Fourth Proportional to 8,708.78, 12,009.93 and 6,716.18

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Solution

The fourth proportional to 8,708.78, 12,009.93 and 6,716.18 is: 9,262.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.78 : 12,009.93 = 6,716.18 : x
  2. Step 2: Convert to fraction form
    8,708.78/12,009.93 = 6,716.18/x
  3. Step 3: Cross multiply
    8,708.78x = 12,009.93 × 6,716.18
  4. Step 4: Simplify right side
    8,708.78x = 80,660,851.67
  5. Step 5: Solve for x
    x = 80,660,851.67/8,708.78
  6. Step 6: Final answer
    x = 9,262.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.