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Finding the Fourth Proportional to 2,773.56, 4,159.25 and 1,129.51

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Solution

The fourth proportional to 2,773.56, 4,159.25 and 1,129.51 is: 1,693.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,773.56 : 4,159.25 = 1,129.51 : x
  2. Step 2: Convert to fraction form
    2,773.56/4,159.25 = 1,129.51/x
  3. Step 3: Cross multiply
    2,773.56x = 4,159.25 × 1,129.51
  4. Step 4: Simplify right side
    2,773.56x = 4,697,918.25
  5. Step 5: Solve for x
    x = 4,697,918.25/2,773.56
  6. Step 6: Final answer
    x = 1,693.82

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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.