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Finding the Fourth Proportional to 7,871.84, 11,797.76 and 3,702.68

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Solution

The fourth proportional to 7,871.84, 11,797.76 and 3,702.68 is: 5,549.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.84 : 11,797.76 = 3,702.68 : x
  2. Step 2: Convert to fraction form
    7,871.84/11,797.76 = 3,702.68/x
  3. Step 3: Cross multiply
    7,871.84x = 11,797.76 × 3,702.68
  4. Step 4: Simplify right side
    7,871.84x = 43,683,330.00
  5. Step 5: Solve for x
    x = 43,683,330.00/7,871.84
  6. Step 6: Final answer
    x = 5,549.32

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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.