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Finding the Fourth Proportional to 2,158.75, 3,237.94 and 773.11

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Solution

The fourth proportional to 2,158.75, 3,237.94 and 773.11 is: 1,159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.75 : 3,237.94 = 773.11 : x
  2. Step 2: Convert to fraction form
    2,158.75/3,237.94 = 773.11/x
  3. Step 3: Cross multiply
    2,158.75x = 3,237.94 × 773.11
  4. Step 4: Simplify right side
    2,158.75x = 2,503,283.79
  5. Step 5: Solve for x
    x = 2,503,283.79/2,158.75
  6. Step 6: Final answer
    x = 1,159.60

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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.