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Finding the Fourth Proportional to 4,906.60, 7,359.89 and 1,208.90

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Solution

The fourth proportional to 4,906.60, 7,359.89 and 1,208.90 is: 1,813.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,906.60 : 7,359.89 = 1,208.90 : x
  2. Step 2: Convert to fraction form
    4,906.60/7,359.89 = 1,208.90/x
  3. Step 3: Cross multiply
    4,906.60x = 7,359.89 × 1,208.90
  4. Step 4: Simplify right side
    4,906.60x = 8,897,371.02
  5. Step 5: Solve for x
    x = 8,897,371.02/4,906.60
  6. Step 6: Final answer
    x = 1,813.35

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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.