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Finding the Fourth Proportional to 7,661.40, 11,491.24 and 2,730.92

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Solution

The fourth proportional to 7,661.40, 11,491.24 and 2,730.92 is: 4,096.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.40 : 11,491.24 = 2,730.92 : x
  2. Step 2: Convert to fraction form
    7,661.40/11,491.24 = 2,730.92/x
  3. Step 3: Cross multiply
    7,661.40x = 11,491.24 × 2,730.92
  4. Step 4: Simplify right side
    7,661.40x = 31,381,657.14
  5. Step 5: Solve for x
    x = 31,381,657.14/7,661.40
  6. Step 6: Final answer
    x = 4,096.07

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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.