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Finding the Fourth Proportional to 7,689.22, 10,611.12 and 4,152.43

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Solution

The fourth proportional to 7,689.22, 10,611.12 and 4,152.43 is: 5,730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.22 : 10,611.12 = 4,152.43 : x
  2. Step 2: Convert to fraction form
    7,689.22/10,611.12 = 4,152.43/x
  3. Step 3: Cross multiply
    7,689.22x = 10,611.12 × 4,152.43
  4. Step 4: Simplify right side
    7,689.22x = 44,061,882.85
  5. Step 5: Solve for x
    x = 44,061,882.85/7,689.22
  6. Step 6: Final answer
    x = 5,730.35

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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.