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Finding the Fourth Proportional to 8,759.80, 12,088.56 and 4,781

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Solution

The fourth proportional to 8,759.80, 12,088.56 and 4,781 is: 6,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.80 : 12,088.56 = 4,781 : x
  2. Step 2: Convert to fraction form
    8,759.80/12,088.56 = 4,781/x
  3. Step 3: Cross multiply
    8,759.80x = 12,088.56 × 4,781
  4. Step 4: Simplify right side
    8,759.80x = 57,795,405.36
  5. Step 5: Solve for x
    x = 57,795,405.36/8,759.80
  6. Step 6: Final answer
    x = 6,597.80

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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.