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Finding the Fourth Proportional to 4,791, 6,611.46 and 2,666.55

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Solution

The fourth proportional to 4,791, 6,611.46 and 2,666.55 is: 3,679.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791 : 6,611.46 = 2,666.55 : x
  2. Step 2: Convert to fraction form
    4,791/6,611.46 = 2,666.55/x
  3. Step 3: Cross multiply
    4,791x = 6,611.46 × 2,666.55
  4. Step 4: Simplify right side
    4,791x = 17,629,788.66
  5. Step 5: Solve for x
    x = 17,629,788.66/4,791
  6. Step 6: Final answer
    x = 3,679.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.