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Finding the Fourth Proportional to 4,906.78, 7,360.10 and 1,984.30

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Solution

The fourth proportional to 4,906.78, 7,360.10 and 1,984.30 is: 2,976.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,906.78 : 7,360.10 = 1,984.30 : x
  2. Step 2: Convert to fraction form
    4,906.78/7,360.10 = 1,984.30/x
  3. Step 3: Cross multiply
    4,906.78x = 7,360.10 × 1,984.30
  4. Step 4: Simplify right side
    4,906.78x = 14,604,646.43
  5. Step 5: Solve for x
    x = 14,604,646.43/4,906.78
  6. Step 6: Final answer
    x = 2,976.42

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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.