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Finding the Fourth Proportional to 2,065.80, 3,099.46 and 955.75

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Solution

The fourth proportional to 2,065.80, 3,099.46 and 955.75 is: 1,433.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,065.80 : 3,099.46 = 955.75 : x
  2. Step 2: Convert to fraction form
    2,065.80/3,099.46 = 955.75/x
  3. Step 3: Cross multiply
    2,065.80x = 3,099.46 × 955.75
  4. Step 4: Simplify right side
    2,065.80x = 2,962,298.76
  5. Step 5: Solve for x
    x = 2,962,298.76/2,065.80
  6. Step 6: Final answer
    x = 1,433.97

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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.