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Finding the Fourth Proportional to 4,788.64, 7,182 and 1,326.24

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Solution

The fourth proportional to 4,788.64, 7,182 and 1,326.24 is: 1,989.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788.64 : 7,182 = 1,326.24 : x
  2. Step 2: Convert to fraction form
    4,788.64/7,182 = 1,326.24/x
  3. Step 3: Cross multiply
    4,788.64x = 7,182 × 1,326.24
  4. Step 4: Simplify right side
    4,788.64x = 9,525,055.68
  5. Step 5: Solve for x
    x = 9,525,055.68/4,788.64
  6. Step 6: Final answer
    x = 1,989.09

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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.