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Finding the Fourth Proportional to 8,680.74, 13,015.59 and 7,364.94

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Solution

The fourth proportional to 8,680.74, 13,015.59 and 7,364.94 is: 11,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.74 : 13,015.59 = 7,364.94 : x
  2. Step 2: Convert to fraction form
    8,680.74/13,015.59 = 7,364.94/x
  3. Step 3: Cross multiply
    8,680.74x = 13,015.59 × 7,364.94
  4. Step 4: Simplify right side
    8,680.74x = 95,859,039.41
  5. Step 5: Solve for x
    x = 95,859,039.41/8,680.74
  6. Step 6: Final answer
    x = 11,042.73

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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.