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Finding the Fourth Proportional to 6,424.66, 8,865.76 and 3,591.99

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Solution

The fourth proportional to 6,424.66, 8,865.76 and 3,591.99 is: 4,956.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,424.66 : 8,865.76 = 3,591.99 : x
  2. Step 2: Convert to fraction form
    6,424.66/8,865.76 = 3,591.99/x
  3. Step 3: Cross multiply
    6,424.66x = 8,865.76 × 3,591.99
  4. Step 4: Simplify right side
    6,424.66x = 31,845,721.26
  5. Step 5: Solve for x
    x = 31,845,721.26/6,424.66
  6. Step 6: Final answer
    x = 4,956.79

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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.