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Finding the Fourth Proportional to 6,718.88, 9,271.94 and 3,734.64

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Solution

The fourth proportional to 6,718.88, 9,271.94 and 3,734.64 is: 5,153.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,718.88 : 9,271.94 = 3,734.64 : x
  2. Step 2: Convert to fraction form
    6,718.88/9,271.94 = 3,734.64/x
  3. Step 3: Cross multiply
    6,718.88x = 9,271.94 × 3,734.64
  4. Step 4: Simplify right side
    6,718.88x = 34,627,358.00
  5. Step 5: Solve for x
    x = 34,627,358.00/6,718.88
  6. Step 6: Final answer
    x = 5,153.74

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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.