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Finding the Fourth Proportional to 3,187.83, 4,780.50 and 966.18

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Solution

The fourth proportional to 3,187.83, 4,780.50 and 966.18 is: 1,448.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.83 : 4,780.50 = 966.18 : x
  2. Step 2: Convert to fraction form
    3,187.83/4,780.50 = 966.18/x
  3. Step 3: Cross multiply
    3,187.83x = 4,780.50 × 966.18
  4. Step 4: Simplify right side
    3,187.83x = 4,618,823.49
  5. Step 5: Solve for x
    x = 4,618,823.49/3,187.83
  6. Step 6: Final answer
    x = 1,448.89

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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.