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Finding the Fourth Proportional to 7,157.47, 10,735.05 and 1,962.13

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Solution

The fourth proportional to 7,157.47, 10,735.05 and 1,962.13 is: 2,942.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.47 : 10,735.05 = 1,962.13 : x
  2. Step 2: Convert to fraction form
    7,157.47/10,735.05 = 1,962.13/x
  3. Step 3: Cross multiply
    7,157.47x = 10,735.05 × 1,962.13
  4. Step 4: Simplify right side
    7,157.47x = 21,063,563.66
  5. Step 5: Solve for x
    x = 21,063,563.66/7,157.47
  6. Step 6: Final answer
    x = 2,942.88

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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.