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Finding the Fourth Proportional to 7,153.75, 10,731.26 and 1,959.63

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Solution

The fourth proportional to 7,153.75, 10,731.26 and 1,959.63 is: 2,939.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.75 : 10,731.26 = 1,959.63 : x
  2. Step 2: Convert to fraction form
    7,153.75/10,731.26 = 1,959.63/x
  3. Step 3: Cross multiply
    7,153.75x = 10,731.26 × 1,959.63
  4. Step 4: Simplify right side
    7,153.75x = 21,029,299.03
  5. Step 5: Solve for x
    x = 21,029,299.03/7,153.75
  6. Step 6: Final answer
    x = 2,939.62

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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.