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Finding the Fourth Proportional to 7,153.76, 10,732.36 and 2,991.48

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Solution

The fourth proportional to 7,153.76, 10,732.36 and 2,991.48 is: 4,487.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.76 : 10,732.36 = 2,991.48 : x
  2. Step 2: Convert to fraction form
    7,153.76/10,732.36 = 2,991.48/x
  3. Step 3: Cross multiply
    7,153.76x = 10,732.36 × 2,991.48
  4. Step 4: Simplify right side
    7,153.76x = 32,105,640.29
  5. Step 5: Solve for x
    x = 32,105,640.29/7,153.76
  6. Step 6: Final answer
    x = 4,487.94

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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.