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Finding the Fourth Proportional to 7,275.12, 10,891.12 and 4,492.84

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Solution

The fourth proportional to 7,275.12, 10,891.12 and 4,492.84 is: 6,725.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.12 : 10,891.12 = 4,492.84 : x
  2. Step 2: Convert to fraction form
    7,275.12/10,891.12 = 4,492.84/x
  3. Step 3: Cross multiply
    7,275.12x = 10,891.12 × 4,492.84
  4. Step 4: Simplify right side
    7,275.12x = 48,932,059.58
  5. Step 5: Solve for x
    x = 48,932,059.58/7,275.12
  6. Step 6: Final answer
    x = 6,725.95

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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.