Home / 3,159.73-4,740-1,211.68

Finding the Fourth Proportional to 3,159.73, 4,740 and 1,211.68

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Solution

The fourth proportional to 3,159.73, 4,740 and 1,211.68 is: 1,817.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.73 : 4,740 = 1,211.68 : x
  2. Step 2: Convert to fraction form
    3,159.73/4,740 = 1,211.68/x
  3. Step 3: Cross multiply
    3,159.73x = 4,740 × 1,211.68
  4. Step 4: Simplify right side
    3,159.73x = 5,743,363.20
  5. Step 5: Solve for x
    x = 5,743,363.20/3,159.73
  6. Step 6: Final answer
    x = 1,817.68

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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.