Home / 2,939.10-4,409.94-1,089.81

Finding the Fourth Proportional to 2,939.10, 4,409.94 and 1,089.81

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Solution

The fourth proportional to 2,939.10, 4,409.94 and 1,089.81 is: 1,635.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.10 : 4,409.94 = 1,089.81 : x
  2. Step 2: Convert to fraction form
    2,939.10/4,409.94 = 1,089.81/x
  3. Step 3: Cross multiply
    2,939.10x = 4,409.94 × 1,089.81
  4. Step 4: Simplify right side
    2,939.10x = 4,805,996.71
  5. Step 5: Solve for x
    x = 4,805,996.71/2,939.10
  6. Step 6: Final answer
    x = 1,635.19

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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.