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Finding the Fourth Proportional to 1,774.51, 2,661.76 and 1,123.88

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Solution

The fourth proportional to 1,774.51, 2,661.76 and 1,123.88 is: 1,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,774.51 : 2,661.76 = 1,123.88 : x
  2. Step 2: Convert to fraction form
    1,774.51/2,661.76 = 1,123.88/x
  3. Step 3: Cross multiply
    1,774.51x = 2,661.76 × 1,123.88
  4. Step 4: Simplify right side
    1,774.51x = 2,991,486.92
  5. Step 5: Solve for x
    x = 2,991,486.92/1,774.51
  6. Step 6: Final answer
    x = 1,685.81

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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.