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Finding the Fourth Proportional to 7,008.89, 9,672.09 and 3,864.88

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Solution

The fourth proportional to 7,008.89, 9,672.09 and 3,864.88 is: 5,333.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,008.89 : 9,672.09 = 3,864.88 : x
  2. Step 2: Convert to fraction form
    7,008.89/9,672.09 = 3,864.88/x
  3. Step 3: Cross multiply
    7,008.89x = 9,672.09 × 3,864.88
  4. Step 4: Simplify right side
    7,008.89x = 37,381,418.84
  5. Step 5: Solve for x
    x = 37,381,418.84/7,008.89
  6. Step 6: Final answer
    x = 5,333.43

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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.