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Finding the Fourth Proportional to 7,674.62, 11,511.12 and 2,479.28

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Solution

The fourth proportional to 7,674.62, 11,511.12 and 2,479.28 is: 3,718.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,674.62 : 11,511.12 = 2,479.28 : x
  2. Step 2: Convert to fraction form
    7,674.62/11,511.12 = 2,479.28/x
  3. Step 3: Cross multiply
    7,674.62x = 11,511.12 × 2,479.28
  4. Step 4: Simplify right side
    7,674.62x = 28,539,289.59
  5. Step 5: Solve for x
    x = 28,539,289.59/7,674.62
  6. Step 6: Final answer
    x = 3,718.66

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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.