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Finding the Fourth Proportional to 4,745.79, 7,129.62 and 2,799.36

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Solution

The fourth proportional to 4,745.79, 7,129.62 and 2,799.36 is: 4,205.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,745.79 : 7,129.62 = 2,799.36 : x
  2. Step 2: Convert to fraction form
    4,745.79/7,129.62 = 2,799.36/x
  3. Step 3: Cross multiply
    4,745.79x = 7,129.62 × 2,799.36
  4. Step 4: Simplify right side
    4,745.79x = 19,958,373.04
  5. Step 5: Solve for x
    x = 19,958,373.04/4,745.79
  6. Step 6: Final answer
    x = 4,205.49

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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.