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Finding the Fourth Proportional to 6,157.79, 9,238.15 and 1,997.80

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Solution

The fourth proportional to 6,157.79, 9,238.15 and 1,997.80 is: 2,997.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,157.79 : 9,238.15 = 1,997.80 : x
  2. Step 2: Convert to fraction form
    6,157.79/9,238.15 = 1,997.80/x
  3. Step 3: Cross multiply
    6,157.79x = 9,238.15 × 1,997.80
  4. Step 4: Simplify right side
    6,157.79x = 18,455,976.07
  5. Step 5: Solve for x
    x = 18,455,976.07/6,157.79
  6. Step 6: Final answer
    x = 2,997.18

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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.