Home / 4,231.21-6,346.90-1,309.51

Finding the Fourth Proportional to 4,231.21, 6,346.90 and 1,309.51

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Solution

The fourth proportional to 4,231.21, 6,346.90 and 1,309.51 is: 1,964.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,231.21 : 6,346.90 = 1,309.51 : x
  2. Step 2: Convert to fraction form
    4,231.21/6,346.90 = 1,309.51/x
  3. Step 3: Cross multiply
    4,231.21x = 6,346.90 × 1,309.51
  4. Step 4: Simplify right side
    4,231.21x = 8,311,329.02
  5. Step 5: Solve for x
    x = 8,311,329.02/4,231.21
  6. Step 6: Final answer
    x = 1,964.29

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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.