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Finding the Fourth Proportional to 2,866.63, 4,300.23 and 786.76

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Solution

The fourth proportional to 2,866.63, 4,300.23 and 786.76 is: 1,180.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.63 : 4,300.23 = 786.76 : x
  2. Step 2: Convert to fraction form
    2,866.63/4,300.23 = 786.76/x
  3. Step 3: Cross multiply
    2,866.63x = 4,300.23 × 786.76
  4. Step 4: Simplify right side
    2,866.63x = 3,383,248.95
  5. Step 5: Solve for x
    x = 3,383,248.95/2,866.63
  6. Step 6: Final answer
    x = 1,180.22

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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.