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Finding the Fourth Proportional to 4,786.59, 7,179.84 and 1,866.95

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Solution

The fourth proportional to 4,786.59, 7,179.84 and 1,866.95 is: 2,800.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.59 : 7,179.84 = 1,866.95 : x
  2. Step 2: Convert to fraction form
    4,786.59/7,179.84 = 1,866.95/x
  3. Step 3: Cross multiply
    4,786.59x = 7,179.84 × 1,866.95
  4. Step 4: Simplify right side
    4,786.59x = 13,404,393.31
  5. Step 5: Solve for x
    x = 13,404,393.31/4,786.59
  6. Step 6: Final answer
    x = 2,800.40

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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.