Home / 3,112.29-4,668.94-921.24

Finding the Fourth Proportional to 3,112.29, 4,668.94 and 921.24

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Solution

The fourth proportional to 3,112.29, 4,668.94 and 921.24 is: 1,382.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.29 : 4,668.94 = 921.24 : x
  2. Step 2: Convert to fraction form
    3,112.29/4,668.94 = 921.24/x
  3. Step 3: Cross multiply
    3,112.29x = 4,668.94 × 921.24
  4. Step 4: Simplify right side
    3,112.29x = 4,301,214.29
  5. Step 5: Solve for x
    x = 4,301,214.29/3,112.29
  6. Step 6: Final answer
    x = 1,382.01

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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.