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Finding the Fourth Proportional to 1,924.98, 2,887.83 and 770.82

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Solution

The fourth proportional to 1,924.98, 2,887.83 and 770.82 is: 1,156.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,924.98 : 2,887.83 = 770.82 : x
  2. Step 2: Convert to fraction form
    1,924.98/2,887.83 = 770.82/x
  3. Step 3: Cross multiply
    1,924.98x = 2,887.83 × 770.82
  4. Step 4: Simplify right side
    1,924.98x = 2,225,997.12
  5. Step 5: Solve for x
    x = 2,225,997.12/1,924.98
  6. Step 6: Final answer
    x = 1,156.37

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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.