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Finding the Fourth Proportional to 1,906.60, 2,860.10 and 607.77

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Solution

The fourth proportional to 1,906.60, 2,860.10 and 607.77 is: 911.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.60 : 2,860.10 = 607.77 : x
  2. Step 2: Convert to fraction form
    1,906.60/2,860.10 = 607.77/x
  3. Step 3: Cross multiply
    1,906.60x = 2,860.10 × 607.77
  4. Step 4: Simplify right side
    1,906.60x = 1,738,282.98
  5. Step 5: Solve for x
    x = 1,738,282.98/1,906.60
  6. Step 6: Final answer
    x = 911.72

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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.