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Finding the Fourth Proportional to 7,872.50, 10,864.06 and 4,335.70

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Solution

The fourth proportional to 7,872.50, 10,864.06 and 4,335.70 is: 5,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.50 : 10,864.06 = 4,335.70 : x
  2. Step 2: Convert to fraction form
    7,872.50/10,864.06 = 4,335.70/x
  3. Step 3: Cross multiply
    7,872.50x = 10,864.06 × 4,335.70
  4. Step 4: Simplify right side
    7,872.50x = 47,103,304.94
  5. Step 5: Solve for x
    x = 47,103,304.94/7,872.50
  6. Step 6: Final answer
    x = 5,983.27

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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.