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Finding the Fourth Proportional to 4,786.16, 7,179.28 and 1,323.68

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Solution

The fourth proportional to 4,786.16, 7,179.28 and 1,323.68 is: 1,985.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.16 : 7,179.28 = 1,323.68 : x
  2. Step 2: Convert to fraction form
    4,786.16/7,179.28 = 1,323.68/x
  3. Step 3: Cross multiply
    4,786.16x = 7,179.28 × 1,323.68
  4. Step 4: Simplify right side
    4,786.16x = 9,503,069.35
  5. Step 5: Solve for x
    x = 9,503,069.35/4,786.16
  6. Step 6: Final answer
    x = 1,985.53

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1.5x scale

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.