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Finding the Fourth Proportional to 8,680.68, 13,012.74 and 6,453.72

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Solution

The fourth proportional to 8,680.68, 13,012.74 and 6,453.72 is: 9,674.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.68 : 13,012.74 = 6,453.72 : x
  2. Step 2: Convert to fraction form
    8,680.68/13,012.74 = 6,453.72/x
  3. Step 3: Cross multiply
    8,680.68x = 13,012.74 × 6,453.72
  4. Step 4: Simplify right side
    8,680.68x = 83,980,580.39
  5. Step 5: Solve for x
    x = 83,980,580.39/8,680.68
  6. Step 6: Final answer
    x = 9,674.42

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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.