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Finding the Fourth Proportional to 7,256.96, 10,890.29 and 2,639.96

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Solution

The fourth proportional to 7,256.96, 10,890.29 and 2,639.96 is: 3,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,256.96 : 10,890.29 = 2,639.96 : x
  2. Step 2: Convert to fraction form
    7,256.96/10,890.29 = 2,639.96/x
  3. Step 3: Cross multiply
    7,256.96x = 10,890.29 × 2,639.96
  4. Step 4: Simplify right side
    7,256.96x = 28,749,922.98
  5. Step 5: Solve for x
    x = 28,749,922.98/7,256.96
  6. Step 6: Final answer
    x = 3,961.70

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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.