Home / 3,159.39-4,739.78-1,211.59

Finding the Fourth Proportional to 3,159.39, 4,739.78 and 1,211.59

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Solution

The fourth proportional to 3,159.39, 4,739.78 and 1,211.59 is: 1,817.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.39 : 4,739.78 = 1,211.59 : x
  2. Step 2: Convert to fraction form
    3,159.39/4,739.78 = 1,211.59/x
  3. Step 3: Cross multiply
    3,159.39x = 4,739.78 × 1,211.59
  4. Step 4: Simplify right side
    3,159.39x = 5,742,663.99
  5. Step 5: Solve for x
    x = 5,742,663.99/3,159.39
  6. Step 6: Final answer
    x = 1,817.65

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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.