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Finding the Fourth Proportional to 8,608.74, 11,880.45 and 6,742.50

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Solution

The fourth proportional to 8,608.74, 11,880.45 and 6,742.50 is: 9,304.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.74 : 11,880.45 = 6,742.50 : x
  2. Step 2: Convert to fraction form
    8,608.74/11,880.45 = 6,742.50/x
  3. Step 3: Cross multiply
    8,608.74x = 11,880.45 × 6,742.50
  4. Step 4: Simplify right side
    8,608.74x = 80,103,934.13
  5. Step 5: Solve for x
    x = 80,103,934.13/8,608.74
  6. Step 6: Final answer
    x = 9,304.95

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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.