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Finding the Fourth Proportional to 7,305.81, 10,952.57 and 2,920.88

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Solution

The fourth proportional to 7,305.81, 10,952.57 and 2,920.88 is: 4,378.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,305.81 : 10,952.57 = 2,920.88 : x
  2. Step 2: Convert to fraction form
    7,305.81/10,952.57 = 2,920.88/x
  3. Step 3: Cross multiply
    7,305.81x = 10,952.57 × 2,920.88
  4. Step 4: Simplify right side
    7,305.81x = 31,991,099.31
  5. Step 5: Solve for x
    x = 31,991,099.31/7,305.81
  6. Step 6: Final answer
    x = 4,378.86

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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.