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Finding the Fourth Proportional to 1,906.77, 2,860.34 and 752.25

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Solution

The fourth proportional to 1,906.77, 2,860.34 and 752.25 is: 1,128.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.77 : 2,860.34 = 752.25 : x
  2. Step 2: Convert to fraction form
    1,906.77/2,860.34 = 752.25/x
  3. Step 3: Cross multiply
    1,906.77x = 2,860.34 × 752.25
  4. Step 4: Simplify right side
    1,906.77x = 2,151,687.00
  5. Step 5: Solve for x
    x = 2,151,687.00/1,906.77
  6. Step 6: Final answer
    x = 1,128.45

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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.