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Finding the Fourth Proportional to 8,878.40, 13,304.64 and 4,983.92

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Solution

The fourth proportional to 8,878.40, 13,304.64 and 4,983.92 is: 7,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.40 : 13,304.64 = 4,983.92 : x
  2. Step 2: Convert to fraction form
    8,878.40/13,304.64 = 4,983.92/x
  3. Step 3: Cross multiply
    8,878.40x = 13,304.64 × 4,983.92
  4. Step 4: Simplify right side
    8,878.40x = 66,309,261.39
  5. Step 5: Solve for x
    x = 66,309,261.39/8,878.40
  6. Step 6: Final answer
    x = 7,468.60

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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.