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Finding the Fourth Proportional to 2,868.67, 4,303.12 and 788.87

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Solution

The fourth proportional to 2,868.67, 4,303.12 and 788.87 is: 1,183.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.67 : 4,303.12 = 788.87 : x
  2. Step 2: Convert to fraction form
    2,868.67/4,303.12 = 788.87/x
  3. Step 3: Cross multiply
    2,868.67x = 4,303.12 × 788.87
  4. Step 4: Simplify right side
    2,868.67x = 3,394,602.27
  5. Step 5: Solve for x
    x = 3,394,602.27/2,868.67
  6. Step 6: Final answer
    x = 1,183.34

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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.