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Finding the Fourth Proportional to 4,791, 6,611.96 and 2,695.28

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Solution

The fourth proportional to 4,791, 6,611.96 and 2,695.28 is: 3,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791 : 6,611.96 = 2,695.28 : x
  2. Step 2: Convert to fraction form
    4,791/6,611.96 = 2,695.28/x
  3. Step 3: Cross multiply
    4,791x = 6,611.96 × 2,695.28
  4. Step 4: Simplify right side
    4,791x = 17,821,083.55
  5. Step 5: Solve for x
    x = 17,821,083.55/4,791
  6. Step 6: Final answer
    x = 3,719.70

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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.