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Finding the Fourth Proportional to 4,655.74, 6,976.31 and 3,959.55

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Solution

The fourth proportional to 4,655.74, 6,976.31 and 3,959.55 is: 5,933.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,655.74 : 6,976.31 = 3,959.55 : x
  2. Step 2: Convert to fraction form
    4,655.74/6,976.31 = 3,959.55/x
  3. Step 3: Cross multiply
    4,655.74x = 6,976.31 × 3,959.55
  4. Step 4: Simplify right side
    4,655.74x = 27,623,048.26
  5. Step 5: Solve for x
    x = 27,623,048.26/4,655.74
  6. Step 6: Final answer
    x = 5,933.12

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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.