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Finding the Fourth Proportional to 7,689.43, 10,611.36 and 4,333.32

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Solution

The fourth proportional to 7,689.43, 10,611.36 and 4,333.32 is: 5,979.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.43 : 10,611.36 = 4,333.32 : x
  2. Step 2: Convert to fraction form
    7,689.43/10,611.36 = 4,333.32/x
  3. Step 3: Cross multiply
    7,689.43x = 10,611.36 × 4,333.32
  4. Step 4: Simplify right side
    7,689.43x = 45,982,418.52
  5. Step 5: Solve for x
    x = 45,982,418.52/7,689.43
  6. Step 6: Final answer
    x = 5,979.95

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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.