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Finding the Fourth Proportional to 4,659.42, 6,985.74 and 2,192.87

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Solution

The fourth proportional to 4,659.42, 6,985.74 and 2,192.87 is: 3,287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,659.42 : 6,985.74 = 2,192.87 : x
  2. Step 2: Convert to fraction form
    4,659.42/6,985.74 = 2,192.87/x
  3. Step 3: Cross multiply
    4,659.42x = 6,985.74 × 2,192.87
  4. Step 4: Simplify right side
    4,659.42x = 15,318,845.36
  5. Step 5: Solve for x
    x = 15,318,845.36/4,659.42
  6. Step 6: Final answer
    x = 3,287.71

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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.